Much of the info you ask for is unknown.Here's the earliest:
FAIRFAX COUNTY PPT
1787 Thomas Glover on Alexandria Tithable Tax List for March 1787; hewas apparently a hatmaker (leather?).He could have been the father of the three Glover males.He may have come from King George.
1789 Benjamin Glover (I):R. Glover, is apparently living with him.Probably is his brother Richard, who is thought to have been married to a first wife by then and to have had at least two children at the time.In 1795 he remarried Dorcas Alexander. Another brother, John, is probably too young to be listed.(Benjamin and Richard have two horses between them.)
Notes:These entries are apparently in Fairfax Parish, Fairfax County, sometimes called “Fairfax District.”
Since there is a possibility that the Glovers were related to the Alexanders, it should be noted that there are several Alexanders in Fairfax in the 1780’s and ’90’s. A Thomas is of interest to me, probably a leather worker, and he had a son Washington in 1800 in Alexandria.Migrated to Shenandoah County after the War of 1812