Simplify the following text for a Grade 3 native English-speaking person.
Original: The British renamed the Banjul Island to St. Mary and first named Bathurst after Henry Bathurst , the secretary of the British Colonial Office , but was changed to Banjul in 1973 .
Simplified: It was first named Bathurst after Henry Bathurst . The name was changed to Banjul in 1973 .