My father's father's father was John Wesley Starling near Portland, Maine.This is not the same John W. Starling you are searching for, as far as I know.
[O.T: My name is also John Wesley Starling so with the birth announcement my grandfather assumed I was named after his father.This surprised my parents because I was named after my other grandfather, John Arthur Hanson, Portland, ME.My father, Wesley Whitten Starling (1921), was named after his grandfather "Wesley" and always assumed Wesley was his first name.]
My line of Starling's goes back to Monmouth Island.This line includes Josiah Starling and Mary Trefetheren.
There is a mystery in this area regarding one large family which changed its name between Starling and Sterling.I forget the detail.One ancestor there was the sea captain with a fleet clipper ships who had received much of Monmouth Island as a wedding present from the bride's father.
My father has some good documents and notes for me.I'll reference them or get some keyed if there is interest.