Mountcastle

Perhaps a habitational surname from a now lost place, from mount +‎ castle. Alternatively, a further Anglicization of the Irish surname Mountcashell.

Mountcastle (countable and uncountable, plural Mountcastles)

1. A suburb of Edinburgh, Scotland, United Kingdom.
2. An unincorporated community in New Kent County, Virginia, United States.
3. A surname from Irish.

• According to the 2010 United States Census, Mountcastle is the 36154^th most common surname in the United States, belonging to 620 individuals. Mountcastle is most common among White (86.77%) individuals.

• Hanks, Patrick, editor (2003), “Mountcastle”, in Dictionary of American Family Names, volume 2, New York: Oxford University Press, →ISBN, page 627.