I, too, am researching Winters in Suffolk Co,NY. I see in my notes that I have a Lucinda, born 23 Mar 1802, Dau. of James Winters who was in Riverhead in 1810. This info is from the IGI in Salt Lake. and the 1810 census.
The line I am researching is that of Isaac. Alot of the Winters family were in whaling in Sag Harbor. I have a George Winters born 5/27/1820, son of Daniel, and who married Mary Corwin. This Daniel wa born ca. 1791 near Riverhead - maybe Flanders, and was married to Deborah Bishop. Daniel died in 1873. That name Tuthill is well known in that area.
Anything sound familiar?