First, though, let’s look at the pedigree of the word cousin itself.
English is sometimes irritatingly vague when it comes to kinship terminology, even within fairly close family relationships.
Typically, the reaction would be one of deep befuddlement (particularly from other children: “removed from what??Women in their forties are not made to feel guilty about having babies and the same should apply to cousins who want to marry, said Professor Diane Paul of the University of Massachusetts in Boston and Professor Hamish Spencer of the University of Otago in Dunedin, New Zealand.Although first-cousin marriages are legal in Britain, there have been calls to ban the practice because of reports that it has resulted in a higher-than-average incidence of birth defects in certain immigrant communities where it is common and culturally acceptable.I can’t tell (without more context) if your brother-in-law is your sister’s husband or your husband’s brother.We can say, for example, “aunt-by-marriage” or “paternal grandfather”, but those precise terms aren’t common in everyday speech.
Edgar Allan Poe The American gothic poet secretly married his 13-year-old first cousin, Virginia Eliza Clemm, in 1834. Johann Sebastian Bach In 1707 Bach married his second cousin Maria Barbara Bach and had seven of his 20 children with her.