In his will, dated 12 December 1589, Walsingham complained of "the greatness of my debts and the mean state shall leave my wife and heirs in", but the true state of his finances is unclear. He received grants of land from the Queen, grants for the export of cloth and leases of customs in the northern and western ports. His primary residences, apart from the court, were in Seething Lane by the Tower of London (now the site of a Victorian office building called Walsingham House), at Barn Elms in Surrey and at Odiham in Hampshire. Nothing remains of any of his houses. He spent much of his own money on espionage in the service of the Queen and the Protestant cause. In 1586, he funded a lectureship in theology at Oxford University for the Puritan John Rainolds. He had underwritten the debts of his son-in-law, Sir Philip Sidney, had pursued the Sidney estate for recompense unsuccessfully and had carried out major land transactions in his later years. After his death, his friends reflected that poor bookkeeping had left him further in the Crown's debt than was fair. In 1611, the Crown's debts to him were calculated at over £48,000, but his debts to the Crown were calculated at over £43,000 and a judge, Sir Julius Caesar, ordered both sets of debts cancelled "quid pro quo". Walsingham's surviving daughter Frances received a £300 annuity, and married the Earl of Essex. Ursula, Lady Walsingham, continued to live at Barn Elms with a staff of servants until her death in 1602.