Learning or Dedicating for Leilu Nishmas: Sephardic vs. Ashkenazic

Question

Just curious as to the differences between Sephardic/Mizrahi and Ashkenazic customs in regards to mentioning a deceased person's mother or father's name when dedicating something? I think Ashkenazim say the father's name and Sephardim, the opposite.

Answer 1

Ashkenazim always mentioned the father's name only. (Except when praying for a sick person).

In more modern circles one can find Ashkenazim who will mention both parent's name.

By the Sefardim there are various customs (Sources: here and here and here)

But when dedicating something one can write anything one wishes, pending local custom.