Lenthall's appointment to a series of high offices during this period brought some relief to his preoccupation with his personal finances. He had already called attention to the inadequacy of his salary and been granted a sum of £6,000, and during the 1640s he became Master of the Rolls, a commissioner of the Great Seal, and Chancellor of the Duchy of Lancaster. Nevertheless, his worries continued especially since with the coming of war his estates near Oxford were at risk of confiscation by the royalists. In June 1649 a labourer broke into his London house and stole £1900; he was later caught, tried, and sentenced to hang.