sentences:  The sword and cross were devices of the City of London and, along with an Irish harp embedded within the cross, demonstrated the link between the two cities (The city's official name under UK law is, of course, Londonderry), in particular, the association with the Honourable the Irish Society which had been granted lands in and around the city in the past.The castle was thought to relate to a 13th or 14th century keep belonging to the local native chieftains.There were many theories about the skeleton; the most popular being that it is that of a Norman de Burca knight who was starved to death in the castle dungeons in 1332.