It marks the western end of Wigmore Street, which connects it to Cavendish Square to the east.

This was provided by Mariana Augusta, under the auspices of the Metropolitan Drinking Fountain and Cattle Trough Association, in honour of her late husband Sir John James Hamilton, 2nd Baronet, briefly MP for Sudbury.

The fountain is statutorily protected and recognised in the mainstream, initial category (Grade II).

[2] Its houses were in its first century let or rented in toto by Alexander Hamilton, 10th Duke of Hamilton, Sir Brook Bridges, 3rd Baronet, Henry Pelham-Clinton, 4th Duke of Newcastle-under-Lyne, George Keppel, 6th Earl of Albemarle, Sir Charles Asgill, 1st Baronet, and William Henry Percy.

Alexander Duff, 1st Duke of Fife, maintained his London home at No. 15.