 They had one daughter, Margaret, who became a nun and died young.Catherine died on 3 January 1437, shortly after childbirth, in London, and was "buried in the old Lady chapel" of Westminster Abbey.While the death date is not in question the cause is, with an equal number of records stating that she did not die as a result of childbirth, but entered Bermondsey Abbey, possibly seeking a cure for an illness that had troubled her for some time.