
English has limited terminology for relationships beyond close blood relatives, and this is particularly true for relationships by marriage. The wife of your son's brother-in-law is not related to you by blood. In this case, you are the father-in-law of your son's brother-in-law, and your son's brother-in-law is your son's sister's husband. When speaking to your grandchildren, it is appropriate to refer to your son's brother-in-law as Uncle [Name] and his wife as Aunt [Name]. However, when explaining the relationship to a third party, you would have to explain it verbally, as there is no specific term for this relationship in English.
| Characteristics | Values |
|---|---|
| Relationship to you | None |
| Relationship to your son-in-law | Brother's wife |
| Relationship to your son | Brother's wife's sister |
| Relationship to your grandson | Aunt |
| Relationship to your son's brother-in-law | Sister-in-law |
Explore related products
What You'll Learn
- The wife of your son-in-law's brother is not your relative
- You can refer to her as Aunt [Name] when talking to your grandchildren
- To a third party, you can call her my son-in-law's brother's wife
- The wife of your son-in-law's brother is your son's sister-in-law
- They are related by affinity, a type of kinship, not by blood

The wife of your son-in-law's brother is not your relative
Your son-in-law's brother is your son's brother-in-law, and your grandson's uncle. However, when referring to this person's wife, you would simply use her name when speaking to your grandson. When speaking to a third party, you would refer to her as "my son's sister-in-law" or "my son's brother-in-law's wife".
In-laws are people you are related to by marriage. A sibling-in-law is the spouse of one's sibling or the sibling of one's spouse. More commonly, a male sibling-in-law is referred to as a brother-in-law, and a female sibling-in-law is referred to as a sister-in-law. These terms also refer to the reciprocal relationship between a person's spouse and their sibling's spouse.
Your son-in-law's brother's wife is not your in-law, as the relationship is not direct. In-laws are typically considered to be your spouse's siblings, your spouse's parents, and your siblings' spouses. Your son-in-law's brother's wife is your son's brother-in-law's wife, and your grandson's aunt. However, she is not your relative.
Impressing Your In-Laws: First Conversations
You may want to see also
Explore related products

You can refer to her as Aunt [Name] when talking to your grandchildren
You are not directly related to your son-in-law's brother's wife. However, when talking to your grandchildren, it is appropriate to refer to her as "Aunt [Name]". This form of address acknowledges the familial connection and helps to foster a sense of closeness within the extended family.
In English, kinship terms can be quite limited, especially when it comes to relationships formed through marriage. The term "in-law" is typically reserved for people related by marriage to one's spouse or children. For example, your son-in-law is the husband of your daughter, and your daughter-in-law is the wife of your son. Similarly, your brother-in-law is the husband of your sister, and your sister-in-law is the wife of your brother.
When it comes to extended relationships, such as your son-in-law's brother's wife, there is no specific term to describe her connection to you. However, when addressing your grandchildren, it is correct to refer to her as "Aunt [Name]". This is because she is the wife of your son-in-law's brother, who is like an uncle to your grandchildren.
It is worth noting that in other cultures and languages, there may be more specific terms to describe such relationships. For example, in Indian English, the wife of one's sibling-in-law can be referred to as a "co-sister".
When addressing third parties or seeking to clarify the exact nature of the relationship, it may be necessary to spell out the connection. For example, you could say, "She is my son-in-law's brother's wife" or "She is my son's sister-in-law's sister". However, within the family, it is perfectly acceptable to use the simpler form of address, "Aunt [Name]", when speaking to your grandchildren.
Contract-Based Estate Planning: What's the Deal?
You may want to see also
Explore related products

To a third party, you can call her my son-in-law's brother's wife
The English language has limited terminology for relationships beyond close blood relatives. The wife of your son-in-law's brother is not related to you by blood. In this case, the relationship is by marriage.
The wife of your son-in-law's brother is your son-in-law's sister-in-law. To a third party, you can call her "my son-in-law's brother's wife" or "my son-in-law's sister-in-law". These terms are the most accurate way to describe the relationship to someone outside the family.
When explaining family relationships to a third party, it is often necessary to spell out the relationship in this way. However, once you have introduced the person by explaining their relationship to you, you can usually refer to them by name in future conversations.
It is worth noting that the terms “brother-in-law” and “sister-in-law” can be ambiguous. "Brother-in-law" can refer to your sibling's husband, or your spouse's brother. Similarly, "sister-in-law" can refer to your sibling's wife or your spouse's sister. This can make it challenging to describe relationships to a third party without providing additional context.
In some cultures, there are specific terms to refer to certain relationships that do not exist in English. For example, in Indian English, the wife of your son-in-law's brother could be referred to as a "co-sister".
When it comes to same-sex marriages, the terminology becomes even more complicated.
Lexington Law Contracts: What's the Commitment?
You may want to see also
Explore related products

The wife of your son-in-law's brother is your son's sister-in-law
It is important to note that the term "sister-in-law" can be ambiguous, as it can refer either to your son's sister-in-law or to your own sister-in-law, i.e., the sister of your spouse. This is a limitation of English terminology, and the same ambiguity applies to the term “brother-in-law". This is why it is often helpful to spell out the exact nature of the relationship when introducing family members to a third party. For example, you could say, "This is my son's sister-in-law, [name]."
In Indian English, the wife of your son-in-law's brother would be referred to as a "co-sister". This term specifically denotes the wife of one's sibling-in-law. The reciprocal term, "co-brother", refers to the husband of one's sibling-in-law. These terms are useful in disambiguating the nature of the relationship.
It is worth mentioning that, in some cultures, the use of kinship terms may be more relaxed. For example, in the 19th century, the term "sister" was often used to refer to a sister-in-law or even a brother's sister-in-law, and "cousin" was used more loosely to refer to various types of extended family members.
Overall, while the wife of your son-in-law's brother is your son's sister-in-law, the nature of this relationship can be clarified by using specific terms like "co-sister" or by simply explaining the relationship to a third party.
Tribal Law: Exempt from the Constitution?
You may want to see also
Explore related products

They are related by affinity, a type of kinship, not by blood
The wife of your son-in-law's brother is related to you by what is known as affinity, a type of kinship. This is because in-laws are people you are related to by marriage, and not by blood.
In this case, the wife of your son-in-law's brother is your son-in-law's sister-in-law. This makes her your son's sister-in-law, and therefore, she is related to you by affinity. This is a type of kinship that does not relate to blood relations.
The English language does not have specific terms for relationships beyond close blood relatives. This is particularly true for relationships by marriage. For example, your son's brother-in-law may be referred to as "Uncle Mikey" by your grandson, and his wife as "Aunt Sarah". However, when speaking to a third party, you would refer to them as “my son's brother-in-law” and "my son's sister-in-law".
While there is no specific term for the relationship between you and the wife of your son-in-law's brother, it is clear that the relationship is one of affinity or kinship by marriage, rather than a blood relation.
It is worth noting that the term "in-law" is typically reserved for your spouse's siblings, your spouse's parents, and your siblings' spouses.
Aristotle's First Law of Motion: Anthropomorphic Bias
You may want to see also
Frequently asked questions
No, you are not related to your son-in-law's brother. Your son-in-law is the husband of your daughter. Your son-in-law's brother is not related to you by blood or marriage.
No, you are not related to your son-in-law's brother's wife. There is no simple term for the relationship between you and your son-in-law's brother's wife.
You can refer to your son-in-law's brother by his name. If you are introducing him to someone outside the family, you can explain your relationship by saying, "my son-in-law's brother".
You can refer to your son-in-law's brother's wife by her name. If you are introducing her to someone outside the family, you can explain your relationship by saying, "my son-in-law's brother's wife".











































