One of the Koro Ashɛ translators sadly just heard he lost his step-mother. I offered my condolences and (I really should know better by now than to do this, but) I asked somewhat crassly when she had become his step-mother.
At that point he looked confused.
But of course, I’d asked a silly question. I was thinking that perhaps his mother had died and his father remarried, but no, I was quite off-beam. This was his father’s immediate brother’s wife. All the wives of his uncles are called in Ashɛ-style English ‘step-mothers’, as are co-wives in polygamous households. I guess I would say ‘aunt’ but I get the impression that the relationships just work differently and a paternal aunt by marriage is quite a different thing from a maternal aunt or even a father’s sister.