
The concept of marrying one's brother-in-law is not unheard of and has been practised in various cultures and religions throughout history. In some societies, it was customary for a widow to marry her deceased husband's brother, known as a levirate marriage. This practice was observed by the Jewish community in Yemen until their immigration to Israel in 1950, as well as by the Huns, the Shona people in Zimbabwe, and certain tribes in Kenya and Cameroon. In Islamic law, while not prohibited, it is stipulated that the wife's consent and additional mahr are necessary. In Indian English, the wife of one's brother-in-law is referred to as a co-sister, indicating a degree of kinship without a direct blood relation. While it may be uncommon in certain cultures, marrying one's brother-in-law is not unheard of and has been depicted in various works of fiction, such as Shakespeare's Hamlet.
| Characteristics | Values |
|---|---|
| Incidence in popular culture | In William Shakespeare's Hamlet, the character Claudius marries his sister-in-law. The plot of Holy Matrimony (1994) also involves a similar plot point. In the Tamil novel Arukattuthurai (2006), Aruldas marries his sister-in-law Samuthiravalli. In A Song of Ice and Fire, Lord Eddard Stark marries his brother Brandon's betrothed, Catelyn Tully. |
| Religious customs | In Islamic law (Sharia) and Jewish law (halakha), sexual relations between siblings-in-law are prohibited as incestuous, unless the spouse is no longer married. Conversely, in Judaism, there was the custom of yibbum, which encouraged a man to wed his deceased brother's childless widow. Levirate marriage is also practised by the Shona people in Zimbabwe, the Goula in the Central African Republic, the Mambila in northern Cameroon, and the Maragoli and Nandi of Kenya. |
| Cultural norms | In some parts of Nigeria, it is considered normal for a woman to marry her late husband's brother if she had children with her late husband. This practice is also observed in certain communities in India. |
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What You'll Learn
- Levirate marriage: A widow marries her brother-in-law
- Customs in Judaism: Yibbum is the custom of a man marrying his deceased brother's widow
- Customs in Islam: Sexual relations between siblings-in-law are prohibited as incestuous
- Customs in Kenya: Widows are 'taken over' by their late husband's brother
- No blood relation: Marrying a brother-in-law is not considered incest

Levirate marriage: A widow marries her brother-in-law
The concept of a widow marrying her brother-in-law is known as levirate marriage. The term levirate is derived from the Latin word "levir", meaning "husband's brother". This type of marriage has been practised by various societies with strong clan structures, particularly those that forbid exogamous marriages or marriages outside the clan. While it is no longer common, levirate marriage was observed in ancient times and is referenced in the Bible.
In ancient societies, if a man died childless, it was customary for his unmarried brother to marry the widow to provide an heir for the deceased. The first son produced in this union was considered the legal descendant of the dead husband. For example, in the Bible, Judah instructs his son Onan to "sleep with" his deceased brother's wife, Tamar, and "fulfill your duty... to raise up offspring for your brother" (Genesis 38:8). Levirate marriage is also mentioned in Matthew 22, where Jesus is confronted by the Sadducees with a question based on this tradition.
Levirate marriage has been practised by various cultures around the world, including the Huns, as described by Armenian historian Movses Kalankatuatsi. In some societies, such as the Goula in the Central African Republic, the Mambila in Cameroon, and certain tribes in Nigeria, levirate marriage is still observed. In these societies, a widow is expected to marry her late husband's brother to retain the father's family identity and inheritance for the children.
In some cases, levirate marriage can serve as protection for the widow and her children, ensuring they have a male provider and protector in societies where women are dependent on men. However, in modern times, this practice has generally fallen out of favour due to changing social norms and increased literacy among women.
While levirate marriage is not a common practice today, it is still referenced in popular culture, such as in the novel "Arukattuthurai" and the TV series "Deadwood", where a character marries his brother's widow.
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Customs in Judaism: Yibbum is the custom of a man marrying his deceased brother's widow
In Judaism, there was a custom called Yibbum, which involved a man marrying his deceased brother's widow. This custom is also known as levirate marriage, derived from the Latin 'lēvir', meaning "husband's brother". The purpose of this custom was to ensure the widow had a male provider and protector and to continue the family line of the deceased brother. This practice is mentioned in Deuteronomy 25:5-10, where it is permitted and encouraged, but not obligatory. The widow must have also waited 90 days after the death of her husband to ensure she was not pregnant and to avoid confusion over the identity of the father.
The custom of Yibbum was not limited to Judaism and has been observed in various societies, including ancient Scythia, Central Asia, Northeastern Caucasus Huns, India, Indonesia, Japan, and among the Kurdish people. In these societies, the practice served similar purposes of protecting widows and ensuring the continuation of the deceased brother's family line.
Over time, Yibbum has been gradually replaced by another custom called halizah, which involves a symbolic act of renunciation of a Yibbum marriage. During the halizah ceremony, the widow would remove her brother-in-law's shoe, symbolising mourning and his loss of claim to his brother's inheritance. The widow would then be free to marry anyone she chose. Today, halizah is favoured over Yibbum in most contemporary Jewish communities and is mandated in the State of Israel.
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Customs in Islam: Sexual relations between siblings-in-law are prohibited as incestuous
A sibling-in-law is the spouse of one's sibling or the sibling of one's spouse. In Islamic law (Sharia) and Jewish law (halakha), sexual relations between siblings-in-law are prohibited as incestuous, unless the spouse is no longer married. Islam strictly prohibits incestuous relationships, both in the Quran and the Hadith (sayings of the Prophet Muhammad).
In the Quran, Allah the Almighty says in Surah Al-Isra, verse 32: "And do not approach unlawful sexual intercourse. Indeed, it is ever an immorality and is an evil way." Islamic scholars interpret this verse to include incestuous relationships as a form of unlawful sexual intercourse. The Prophet Muhammad is also quoted as saying: “May Allah curse the one who marries his daughter to himself or marries his sister to himself.” (Sunan Abu Dawud).
Incestuous relationships are viewed as a violation of Islamic principles because they involve a breach of boundaries that should be respected between family members. These relationships are considered a form of abuse that harms both the victim and the family unit. Islam emphasizes the value of consent in any sexual relationship, and incestuous relationships are particularly problematic because consent may be compromised due to issues like coercion or manipulation.
While cousin marriages are not prohibited and are widely practiced throughout the Islamic world, marriage is forbidden between most relatives with whom relations would typically be considered incestuous, including a man marrying his mother, daughter, sister, aunt, niece, or mother-in-law. Other prohibited marriages include step-children born of a spouse with whom the individual has consummated the marriage, or multiple sisters from the same family.
Levirate marriage, where a widow marries her late husband's brother, is a custom practised by some non-Islamic cultures, such as the Huns, Goula, Mambila, Maragoli, Shona, and various groups in Nigeria, as well as in literary works like Shakespeare's Hamlet. However, this practice is not condoned in Islam, as it would constitute incest.
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Customs in Kenya: Widows are 'taken over' by their late husband's brother
In many cultures, it was customary in ancient and biblical times for a man to marry his brother's widow. This practice is known as levirate marriage and has been observed in various societies, including in India, Korea, Peru, Hungary, and among the Jewish and Islamic communities. Levirate marriage is also a plot point in several works of fiction, such as Shakespeare's Hamlet.
In Kenya, specifically among the Luo community, widows are often expected to marry their late husband's brother, a custom known as "bride inheritance" or "widow inheritance." This practice is rooted in the belief that the wealth and property of the deceased should remain within the patrilineal family. It is also seen as a form of social protection and financial support for the widow and her children. Widow inheritance is not limited to the Luo community in Kenya but is also practiced by other ethnic groups in the country, such as the Maragoli and Nandi.
The custom of widow inheritance in Kenya is deeply intertwined with cultural and social norms. In the past, many African societies were largely patriarchal, and when a husband died, his brother or a male relative was expected to step in and assume responsibility for the deceased's household. This included taking over the role of the husband and sexual partner for the widow. The widow often had little choice but to accept this arrangement, as refusing could result in her being ostracized or losing her husband's land.
However, widow inheritance has also been linked to the spread of HIV/AIDS in Kenya and other African countries. The practice of "cleansing," which involves sexual rituals, has contributed to the transmission of the disease, especially when condom use is avoided to comply with customs. Professional widow inheritors, who move from village to village performing "cleansing" rituals, have further exacerbated the risk of HIV/AIDS transmission. As a result, widow inheritance customs have evolved, with some widows opting for professional inheritors instead of their late husband's brother to avoid potential infection.
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No blood relation: Marrying a brother-in-law is not considered incest
Marrying a brother-in-law is not considered incest because there is no blood relation between the individuals. A sibling-in-law is the spouse of one's sibling or the sibling of one's spouse. In other words, they are related by a type of kinship called affinity, which is a relation that does not involve a direct blood connection.
While incest laws are widely enforced, they vary among jurisdictions, including in the United States. In most states, sexual activity between siblings (brother and sister) is penalized as incest. However, marrying one's brother-in-law is not explicitly mentioned in these laws, and it is not considered incest because there is no genetic relation between the individuals.
In some cultures and religions, marrying a sibling-in-law was customary in the past. For example, in Judaism, there was the custom of yibbum, where a man had the non-obligatory duty to wed his deceased brother's childless widow so that she might have progeny by him. Similarly, in Biblical times, it was customary to take care of one's deceased brother's wife by marrying her.
While marrying a brother-in-law is not considered incest, it may still be viewed as socially unusual or unexpected. Some people may find it strange or "crazy" due to the close familial relationship between the individuals involved. However, as there is no blood relation, it is not considered incestuous or illegal in most places.
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Frequently asked questions
In some cultures and religions, it is acceptable to marry your brother-in-law. Levirate marriage, for example, is a type of marriage in which the brother of a deceased man is obliged to marry his brother's widow. This practice is common among the Goula in Central Africa, the Mambila in Cameroon, the Maragoli in Kenya, and the Yoruba, Igbo, and Hausa-Fulani in Nigeria. In the past, it was also customary in Biblical times and in Jewish law. However, it is important to note that the legality of such marriages may vary depending on the laws and cultural norms of a specific region or country.
In William Shakespeare's play "Hamlet," Hamlet's uncle, Claudius, marries his sister-in-law, Gertrude, after the death of Hamlet's father. Another example is found in the Tamil novel "Arukattuthurai," where Aruldas marries his sister-in-law, Samuthiravalli, after his brother goes missing.
There can be various reasons why someone might marry their brother-in-law. In patriarchal societies, levirate marriage can serve as protection for widows and their children, ensuring they have a male provider and protector. It can also help children retain their father's family identity and inheritance. Additionally, in some cultures, it was customary to take care of a deceased brother's wife by marrying her.











































