Lorraine/Lorain of Allegheny Co PA

Wish to correspond with other researchers of the Lorraine/Lorain family who resided in Allegheny & Washington Cos PA in the 1780's & early 1800's.
My ancestor is John Lorain who died 1834 & is buried in the Union United Presb. Cem @ McKees Rock, Allegheny Co.I am descended from his 2nd wife Sarah ___ thru their son Crayton John Lorraine/Lorain.John's 1st wife was Mary Parker.
Sarah ____ Lorraine/Lorain married 2nd to Thomas Hunter