In 1768, he signed a Baltimore County petition to move the county seat from Joppa to Baltimore. An entry for his property in a 1773 Baltimore County tax list identified Banneker as the only adult member of his household.
The island of Montserrat is known as the "Emerald Island of the Caribbean" because of its founding by Irish refugees from Saint Kitts and Nevis. Montserrat is one of three places where St Patrick's Day is a public holiday, along with Ireland and the Canadian province of Newfoundland & Labrador. The holiday in Montserrat also commemorates a failed slave uprising that occurred on 17 March 1768.