Christopher St Lawrence, 5th Baron Howth (died 1542) Edward St Lawrence, 6th Baron Howth (1508–1549) Richard St Lawrence, 7th Baron Howth (died 1558) Christopher St Lawrence, 8th Baron Howth (died 1589) Nicholas St Lawrence, 9th Baron Howth (1555–1606) Christopher St Lawrence, 10th Baron Howth (died 1619) Nicholas St Lawrence, 11th Baron Howth (1597–1643) William St Lawrence, 12th Baron Howth (died 1671) Thomas St Lawrence, 13th Baron Howth (1659–1727) William St Lawrence, 14th Baron Howth (1688–1748) Thomas St Lawrence, 15th Baron Howth (1730–1801; created Earl of Howth in 1767) Earls of Howth (1767) Thomas St Lawrence, 1st Earl of Howth (1730–1801) William St Lawrence, 2nd Earl of Howth (1752–1822) Thomas St Lawrence, 3rd Earl of Howth (1803–1874) William Ulick Tristram St Lawrence, 4th Earl of Howth (1827–1909) References Work cited External links 1767 establishments in the British Empire Extinct earldoms in the Peerage of Ireland Earl Noble titles created in 1767