James Maitland and Jean Gordon were not his parents. You can research them both and find this out. Note: there was more than one Jean Gordon of Sutherland.
His father was James "The Immigrant" Lauderdale (1680-1736/38) Orange, Augusta, VA.
He did not marry Millbury Maudlin b. 1722. Millbury married John Wood Lauderdale (1747-1830)