Marquesses of Westminster First holder Robert Grosvenor, 1st Marquess of Westminster * 1767 Records #3 Holders Family filter On/Off 1 Robert Grosvenor, 1st Marquess of Westminster * 1767 2 Richard Grosvenor, 2nd marquess of Westminster * 1795 3 Hugh Lupus Grosvenor, 1st duke of Westminster * 1825 Corrections and Updates To suggest a correction or an update. Click Here
