Again, that reference to "Wolf Slawis Segal" in that forged and embellished version of Megilat Eiva is almost certainly wrong and probably was added by the editor/forger. Because Wolf Slawes, whom we know from the private letters from 1619 that were found in an archive and published by Landau and Wachstein in 1912, was not a Levite, and was married only to Chava, who was his wife in 1619, and dies as a widow after Wolf died in 1630. So he is not married to Nissel. Nissel's husband, which we know from the grave inscriptions in the Prague old cemetery for some of their descendants, is Wolf Flekeles Horowitz SeGal. The confusion is because Wolf Slawes is mentioned in the memoirs as someone who supported YTLH and paid to get him out of jail. But it isn't the same Wolf as the one who married Nissel. It's an old mistake that keeps getting repeated over and over again.
P.S. Can you tell me what it says about Wolf's next marriage? Because that also fits well with Wolf Flekeles-Horowitz, who dies in 1671, many years after Nissel dies in the Plague in 1639. But I haven't figured out who the second wife is.
P.P.S. it is interesting that Kaufmann calls out the forgery, but that he (or Simon Hock) also made the mistake about Wolf Slawes when he published the book of grave inscriptions by Hock. Apparently that part he wrongly believed was correct.