Try the "Throop Family" website at :http://www3.telus.net/throopgenealogy/t767.html
I have been looking at it for the past 3 weeks and most of the information appears correct. There are some problems with the places. For example Washtenaw Co., Michigan was not settled until 1824 and York Twp was created around 1835 so they could not have been married here in 1799.
There was also a dedication ceremony for Capt. Daniel Throop and the event was videotaped.
The video can be seen at: http://ypsinews.com/index.php/tag/capt-daniel-throop/
Check the census for 1860 in the state of Michigan, Washtenaw County, York Township for Edwin Throop.
Salomon and Polly Throop with his parents Daniel and Mary Throop alone with Mary Barnes Throop father Capt. Daniel Throop appear to have come to York Township, Washtenaw Co., Michigan around 1833. Salomon's brother Enos came around 1837 to York Township.
Capt. Daniel Throop was from Connecticut and the family website indicates the family was from England.