Barones Sieff Barons Sieff First holder Israel Moses Sieff, 1st Baron Sieff of Brimpton * 1889 Records #2 Holders Family filter On/Off 1 Israel Moses Sieff, 1st Baron Sieff of Brimpton * 1889 2 Sir Marcus Joseph Sieff, 2nd Baron Sieff of Brimpton * 1913 Corrections and Updates To suggest a correction or an update. Click Here