Re: The Cobbs of Truro, Massachusetts
There is a George Washington Cobb listed in Philip Cobb's book, A History of the Cobb Family (Part IV). This George was born in Wellfleet, MA, which is the next town south from Truro. He was born in 1861, married Ella Jane Taylor in 1885. His father was Freeman Cobb and his mother was Delia Keith Atwood.
There were a lot of Cobbs on Cape Cod, in two main branches. George Washington Cobb derives from the Boston branch. The Barnstable branch is much larger, but they seldom used the name George.
I hope this helps a little!