In response to your query reguarding the parents of Henry Monteith, he was born October 7, 1818 and died in 1895.He was married to Mary Moore.She was born January 22, 1826 and died December 11, 1844.
Henry was the son of George Monteith.George was born in 1786 and died March 7, 1861.He was married to Rebecca (last name unknown).
George was the son of Henry Monteith Sr., born May 25, 1733 in Scotland.He died November 23, 1838 in Greene County, Tennessee.The only known wife of Henry Sr. was Rebecca (last name unknown), but it is believed there was another wife.
This is not totally proven yet, but we believe Henry Sr. to be the son of John Monteith, born abt. 1708 and died sometime after 1733 in York.
Hope this has helped.I would be interested in knowing how your line descends.