After another hiccup with the government, Sir Robert Cotton was forced to close the library by Charles I because the content within the library was believed to be harmful to the interests of the Royalists in 1629. In September 1630 Sir Robert Cotton and Sir Thomas Cotton, together, petitioned for renewed access to their library. One year later, in 1631, Sir Robert Cotton died without knowing what the future held for his library, but wrote in his will that the library be left to his son Thomas Cotton and that it be passed down accordingly. After the death of his father, Sir Thomas Cotton married his second wife, Alice Constable, in 1640 with whom they had their son Robert Cotton in 1644. Sir Thomas Cotton's "ownership access to the Cotton library was more limited than under his father" according to the Oxford Dictionary of National Biography, and Thomas Cotton maintained his ability to "protect," "improve" and "maximize the profits" received during the civil war, as he had earlier on in his life as a result of his father's absence. Upon the death of Sir Robert Cotton on 13 May 1662, Sir Thomas Cotton obeyed the will of his father and passed down the library to his eldest son from his first marriage, Sir John Cotton.