According to website: www.thesalmons.org/~salmon/family/thurland.html
"About 1605, Francis Tunstall sold Thurland to John Girlington. The castle was occupied by the Girlington family in the 1600's. John died in 1612. In 1619, Nicholas Girlington, heir to John, mortgaged Thurland Castle. Sir John, son and heir of nicholas, a knight and Major-General in the Civil War, surrendered the Castle to the Parliamentary Forces. Nicholas who died in Halifax Co, VA in 1773, left a signed paper in Halifax Court records showing a sketch of a wing of the castle. John Girlington and 2nd wife, Margaret Duckett were probably the last Girlington residents of Thurland castle".
If you go to: www.thurland-castle.co.uk you can see that is has been sub-divided into luxery homes now by a developer!