I am also descended from Alexander Montgomery and Juda Myers. Our family information is that our branch is through their son John A. Montgomery and spouse unknown. John A. and spouse had a son named John Willison(Willson?) Montgomery who married Marie Higgins(she was from England). They migrated south to the U. S. and eventually landed in Texas. They had six sons-Richard, Alfred, Edwin, John, George, and William Archibald from whom I am descended. Thanks to the work of my Mother's cousin Roger Montgomery (who is now deceased) we have a wonderful record of the family line.
William Archibald Montgomery married Isadore Francis Miller and they had 6 children. My grandfather, George Alfred Montgomery was one of those children.
I live in Texas .