I'm not an expert on this family. I merely want to make note of the fact on pp89-93 of the Lida YB (https://www.jewishgen.org/Yizkor/lida/lida.html#Page407) an artcle about R' Elimelek states that he is the grandfather of R' Yakov Kopstheyn. I do not see this descendant lineage on the current GENI tree so I mention it as a possible addition for the managers of this profile.
