Long Family of Wiltshire

My name is Kim, I started tracing my family history last year to try and find out why my Irish father had an Indian born grandfather.  My trip to the British Library to get his baptist certificate revealed that his father was called Charles Long of the 67th Regiment.  My trip to Kew for  mititary records advised me Charles came from Great Barton in Suffolk.  Internet research has taken me back to the marriage of James Long and Elizabeth Hutcheon in 1731, but I have yet to find out where James was born and where his relatives originated from.

I am trying to find out if there is a link to the Wiltshire relatives,