It may be possible to confirm family relationships with Pinkas v Pesich by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
It is likely that these autosomal DNA test-takers will share DNA with Pinkas v Pesich:
Max Heffler :
AncestryDNA, GEDmatch A266036 [compare], Ancestry member Max_Heffler +
Family Tree DNA Family Finder, GEDmatch T552284 [compare], FTDNA kit #2805 +
Autosomal DNA Test, GEDmatch M177048 [compare] +
23andMe, GEDmatch M359165 [compare]