abt 1772 when Alexander was 22, he married Sarah Alexander, daughter of Joseph Alexander & Abigail, in Augusta County, Virginia. Born abt 1752. Sarah died in Limestone County, Alabama, on 8 May 1832; she was 80.
The Land Records, Augusta County, Virginia established Sarah (Alexander) as the wife of Alexander Montgomery.. Alexander Montgomery purchased land from Joseph and Abigail Alexander in 1773. He and his wife Sarah (Alexander) Montgomery sold the land in 1778.
Source of death date and location was the Robert P. Montgomery Family Bible.