My not-yet-relative Rabbi Yehudah Gershon Pickholz
(b. 1844) writes several times that his mother is a
descendant of Rabbi Zvi Hirsch Ashkenazi, the Hacham Zvi.
I assume that the connection is not via the Hacham Zvi's
famous son Rabbi Yaakov Emden (Yavitz) - he would have said
Does anyone have a genealogy of the Hacham Zvi's descendants?