Your gramp William Colburn and my Gramp Edward Colburn were brothers- I have the Colburn genealogy so I looked up William-he was a shoemaker -he built a garrison house in Hollis NH-he was prominent in the militia and was town clerk and selectman of Monson- It says he lived to the age of 80 and his wife aged 85. Pretty impressive ancestor!
What stories they must have heard about the horrible events involving their Grampa Bishop-