Hello rsgwhite, I know you posted this msg. 8 yrs ago, but I'm new to researching on line, so I hope this is something useful. My cybulski family is from the area you mentioned, as far as I can tell. The line seems to go in that direction, as I go back. Here's my family as far as I've researched so far;
grandfather FRANCISZEK; born 1905 Pruszkow
brother Antoni;born 1903
great grandfather ANTONI; born 1877 Wloclawek - had a
brother Stanislaw; born 1873
great great grandfather FRANCISZEK; born apox 1824
Bielawy, Prussia
great great great grandfather ANTONI; born ? Living in Bielawy , Prussia 1850. Married to Elzbieta ____ ?
I can give more info on the family I've named here; wives, children etc., but so far, this is as far back as I go. I am waiting for more info from Wloclawek Archiwum at present time.
I don't know if this helps you, or not. Any info you could share with me would be appreciated.
Thanks,
Jim