Ann, I am connected to Mark and Lucy (Bugg) Alexander II.
This Mark was son of Col. Moses & Sarah Taylor (Alexander) Alexander.Sarah was d/o Wm.& Sarah (Taylor) Alexander.
I refer to this Mark as Mark Alexander II who md Lucy Bugg. They had Mark Alexander whom I call Mark III, who md Sallie Park Turner, d/o ex senator/Gov. Turner of Warren Co., VA. They had 5 children.
Another Mark Alexander was son of Col. Moses Alexander, Jr's, father, Moses Alexander, SR, son of James, weaver. He stayed in Maryland (Baltimore) when his brothers went to Mecklenburg Co., NC, became a merchant/shipper and wealthy.
I think the other Mark's followed him in his line of work. Mark II & Mark III.