Dorothy was the sole executor of Nicholas's will, which provided a bequest "for such uses and purposes" as he had "requested her and she hath assented to". His wishes included the founding of a college in Oxford University, and this Dorothy accomplished, noting that "it would greatly offend my conscience to violate any jot of my husband's will". She added substantial funds from her own great inheritance to the funds left by her late husband in order to finance the building and establishment of the college.