If you're looking for all of their siblings, you need to find their parents' probate records.
Born: 1785, Sutton, Worcester, Mass.
Died: 11 Sept 1858, Penfield, Monroe, NY
Source: James Gordon Hastings family tree, www.ancestry
There were no legimate sources but that's a good place to start looking for his probate records. You'll find contact info for the Monroe County Surrogate Court Clerk at www.nycourts.gov/courts/7jd/monroe
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