Hello,
In the past it was probably 3 regions where Kajkowski family lived: near Plock (in 18th and 19th century in Kruszczewo, the n Biala, Trzebun, Peszyno, Proboszczewice and probably others also, near Czestochowa and near Poznan. More then 50% of population lives near Plock. The oldest records I've found are from 1779. I have already more than 200 names of Kajkowski, many Jozef, Jan, Stanislaw. The closes relatives to me I've already have, but my goal is to create as wide as possible a Kajkowski's history in Mazowia reagion (so far I have more that 200 surnames with family (not maiden) name Kajkowski. My Stanislaw married Josephine, and later Francis. I would say that your Stanislaw on 90% is a relative to my family. So far I have not found (till let say 1930) any Kajkowski who were living near Plock who was not related to each other. If you could write to me
bkpriv@wp.pl with some details like his place of birth I hope I will be able to provide you more info. So far I've gathered only info (let say completed in 80% just from Proboszczewice parish), but next step will be Biala parish. I know for sure that part of the family was living there in 19th and 20th century.
Regards
Bogdan