Kevin Lawrence Hanit and Private User,
I've been scratching my head over all of this.
In Geni we do have R' Eliezer Lipman Heilprin, A.B.D. Lviv with a son
R' Isaac Halpern, A.B.D. Tykocin however, Gelles says that Israel and Lifsha Helprin 's son Rabbi Shmuel Helman, ABD Metz lived from 1670 to 1764, which seems to put his birth too late to be a son of this particular Israel, whose other children were born between 1625 and 1635 to two different mothers (i.e. not Lifsha's children).
So, I'm stumped for now.
Claudia