Ivy Cavendish-Bentinck, Duchess of Portland GBE was Duchess of Portland from 1943 – 1977 and afterwards Dowager Duchess. She initiated the Harley Foundation, "to encourage creativity".
Chesterfield Street is a "virtually intact" Georgian street in London's Mayfair district. Several of the buildings are Grade II listed on the National Heritage List for England.
Chesterfield House in 1760, published in Walford's Old & New London (1878)