Identity, yes, name no. I have attached the article about Abraham Schrentsel as a media file to both profiles. This information is repeated in Otser HaRabanim # 880, 14051, and 11090, and by Jacobi in his unpublished Rapaport Family Draft. Jacobi cites the EJ as a source as well as Dembitzer and Buber, without specifying what he got from each. I haven't seen any evidence for the given name 'Rachel' anywhere. So, there seems to be a strong consensus on the fact of Abraham marrying a daughter of Mordechai Schrentsel, but not on that the name of this daughter was Rachel. I hope this helps alleviate the confusion.
