Since your great grandfather was brother to the other person's great grandfather, the two great grandfathers had at least one parent in common. That parent is your common ancestor, the great great grandparent of both of you. People who share a grandparent are first cousins. People who share a great grandparent are second cousins. People who share a great great grandparent are third cousins. You are third cousins.
step brother and sister
Your wife's brother-in-law is either your brother or the husband of her sister. In the first case, her brother-in-law's brother is you or one of your other brothers. In the second case, her brother-in-law's brother is not related to you.
David and Kelly on 90210 are step brother and sister.
Your father and your aunt are siblings (brother and sister) The grandchildren of siblings are second cousins to each other.
Your brother-in-law is not a blood relation, and neither is his brother. So yes, you could marry a brother-in-law's brother, if you wanted.My grandmother "R" married a man, "H"."H's" sister, "A", married my grandmother's brother, "L".So brother and sister in one family, married sister and brother of the other family. Love occurs in the strangest ways!
It says what relation are your brothers nieces to you.... It could be your child or your niece also causes you can have two brothers and it may be the other ones kids. Or of course it could be your brother's new wife kid by another man making her no relation.
Your sister's brother is your brother. Or yourself if she has no other male siblings.
The grandchildren of your grandmother and the grandchildren of any of her siblings (including of her brother) are second cousins to each other.
If your sister-in-law is your spouse's sister, her brother is your spouse's brother and therefore is your brother-in-law, or perhaps your husband. If your sister-in-law is the wife of your brother, her brother is your brother's brother-in-law but is not related to you. The English language has no relationship term for the brother of your sibling's spouse.
The grandchildren of siblings are second cousins to each other.
Your sister's daughter and your sister's brother are niece and uncle to each other. The daughter is the niece of the brother and the brother is uncle to the daughter.
Your sister-in-law is either the wife of your brother or the sister of your spouse. If you have more than one brother, and your sister-in-law is the wife of one brother, then she is the sister-in-law of the other. If your sister-in-law is the sister of your spouse, she has no direct relationship to your brother. He can call her "my brother's sister-in-law", or "my nephew's aunt."