You must be our cousin, sir. My dad, Robert J.Colborn Jr. is related to the same Colborn's from Somerset county in Western Pennsylvania, exact same location. The relative Robert Colborn you wrote of is my dad's great grandfather, I am just about positive. Please e-mail him if you can-he is trying to keep up on family archives. His e-mail address is email@example.com -we look forward to hearing from you!