Б-28

ПО БАТЮШКЕ (звать, величать кого) old-fash, coll PrepP Invar usu. adv

(to call, address s.o. ) by the name derived from his or her father's name (by adding a suffix), which follows the first name and precedes the last name (in formal address, it is used in conjunction with the first name, whereas in uneducated or humorous speech it may be used alone)

patronymic.

«Как, бишь, её зовут?» - спросил Базаров. «Фенечкой... Федосьей», - ответил Аркадий. «А по батюшке? Это тоже нужно знать». - «Николаевной» (Тургенев 2). "What did you say her name was?" asked Bazarov. "Feniehka...Fedosya," Arkady replied. "And her patronymic? One must know that too." "Niko-layevna" (2c).