sentences:  His grandfather, the 1st Viscount, followed him into the grave two weeks later on 15 March 1624.His elder brother Lucas succeeded his grandfather as the 2nd Viscount Dillon.Lucas stayed viscount for about five years and died in 1629, leaving a three months old child, Theobald, who became the 3rd Viscount and a ward of the King but lasted only about a year dying on 13 May 1630 in his infancy.