Hello Private User
Leybus Tanachowicz/Dawidmann was my ancestor (5th grneration). He was born 28 december 1812 as Leybus Tanachowicz. On 12 march 1843, as Leyba Dawidmann, he had catholic baptism and got name Jan Kazimierz Grudzieński (probably he chose this surname because he was born on December. December in Polish is grudzień). On 6 June 1843 he got married Antonina Zbrozińska. He died in Skaryszew on 26 June 1884.