He seems to have lived in MD, but apparently was never on a census.
There were a lot of Rigby families living in MD before 1800, but I don't see any named Stanislaus.
Did he have a son Francis c1777?
Did he have a daughter Charlotte who married in Washington DC 1823-11-20 Edward Speakes?
--
This should be him, but it doesn't match well at all:
1800 census Washington DC p17
Stana Ridgly 1 M 10-16, 2 M 16-26, 1 F 10-16, 1 F 16-26, 1 F 45+
Hinds Site: Genealogy of Ken Hinds -- page 18702
I strive for accuracy, but I cannot guarantee this information
is correct or complete. Hard references are given where I have them,
but otherwise you should verify this information.
Please email me if you have any corrections, comments, or questions.
Notice: Because of spam, any email without the word "genealogy" in the subject will be deleted unread.