Reply To: Yavam inheriting father who was a ger

“Anyway, the answer is that the ri holds eishes ach shelo haya b’olamo falls to yibum if already pregnant, but, does not receive yerusha. We learn it from naami “gam halayla hayisi l’ish””

Except that Tosafos in Yevamos 17b says ????? ???????? ????? ?????? ?? ???? ?????? ???? ???? ???? ???? ?????? ??? ??? ??? ???? ????? ?? i.e. none other than the Ri says that this is precisely the case which we need the pasuk of ?? ???? ???? ???? to tell us that there is no yibum.