[1] In the early 17th century Patrick Stewart, 2nd Earl of Orkney, feuded with Laurence Bruce, Sheriff of Shetland.
Robert and his supporters occupied Kirkwall Castle, along with the Bishop's and Earl's Palaces, and St Magnus Cathedral.
In August, George Sinclair, 5th Earl of Caithness led royal troops against the rebels, and Kirkwall Castle surrendered in September.
[2] On 26 October 1614 the Privy Council of Scotland ordered that Kirkwall Castle be demolished, although this was not carried out until the following year.
By 1865 only a 55-foot (16.8 m) section of wall, 11 feet (3.4 m) thick remained, and this was removed to improve access to the harbour.