Private User
I have no clue, the name Fiszel is repeated in my family tree, but unfortunately I have no answer.
Also regarding the name Fiszel I put with a question mark, it is possible that his name was different, maybe Moshe
We know Isidore wartski was either my great-grandfather's brother or cousin, but in geni they are not connected
Private User
The names nathan, Moshe Meir, Avraham ... are also repeated in my family tree.
As for Avraham I think is after my great grandfather (4): Rabbi Avraham Erlich
Rabbi Abraham Elias(Haron?) Erlich