The children of two brothers who marry two sisters are first cousins to each other. Some people like to describe the relationship as "double cousins" since most people have cousin relationships through one parent/sibling pair, and these have it through two such pairs.
They where all brothers and sisters.
8 brothers and sisters
she had three sisters and 4 brothers
he has 707 children and 132 brothers and 45367 sisters
The brothers of your spouse are your brothers-in-law. Also, the husbands of your sisters are your brothers-in-law.
Brothers and Sisters in Concert
They could be brothers and sisters or the could be cousins
When brothers marry sisters their children's DNA will be closer that that of regular first cousins, but not as close as that of siblings.
it has been translated as into English as "relationship", more precisely proper relationships between two entities, e.g., brothers and sisters, parents and children, alii (chiefs) and tulafale (orators), etc.
Your sister's husband is your children's uncle. They are his nieces and nephews.
she had no children or siblings
Bessie Coleman had 12 brothers and sisters she was the tenth of twelve children