I have not been able to find info on Stoughton R. Hale's parents or his siblings. I've searched both Genesee and Ontario County NY for his probate records, with no luck.
You might like to look at Robin Boyer's website. He has a bit of information on Stoughton's two wives and the children from both marriages. http://familytreemaker.genealogy.com/users/b/o/y/Robin-L-Boy...
If you go to the index and scroll down, you can click on the Hale listing.
I have seen Peleg Hale while searching in the early 1800s census. I don't know how he fits into the picture, but I bet he's part of this clan also.
Sorry I couldn't help more.