 He spent a large sum extending Berry Pomeroy Castle, over £20,000 according to John Prince in his "Worthies of Devon", 1697, particularly in the building of the north range in about 1600.In 1604 he tried to claim part of his grandfather the Duke of Somerset's estate, but was opposed by his half-cousin Edward Seymour, 1st Earl of Hertford and was unsuccessful.From around 1611, as a result of the large expenditure on his home, the cost of supporting his eight children and legal expenses, he was apparently short of money.