Conversation so far:
When was George Washington a surveyor?
George Washington spent a month in 1748 with a team surveying Fairfax's Shenandoah Valley property. He received a surveyor's license the following year from the College of William & Mary.
Where was Washington a surveyor?
Fairfax appointed George Washington surveyor of Culpeper County, Virginia.

Question: What is Mount Vernon?
Self-contained rewrite: What is Mount Vernon's relation with George Washington?