Earls of Howth First holder Thomas St. Lawrence, 1st earl of Howth * 1730 Records #4 Holders Family filter On/Off 1 Thomas St. Lawrence, 1st earl of Howth * 1730 2 William St. Lawrence, 2nd earl of Howth * 1752 3 Thomas St. Lawrence, 3rd earl of Howth * 1803 4 William Ulick Tristram St Lawrence, 4th earl of Howth * 1827 Corrections and Updates To suggest a correction or an update. Click Here