One interesting aspect of Conisbrough Castle is that it was visited by Sir Walter Scott (no relation) when he was writing his novel 'Ivanhoe'. He also came to Firbeck Hall, about three hundred yards from where I am sitting, to take notes from a man called Henry Gally Knight about the massive forest that stretched from Nottingham to the Rother Valley which resulted in some local geography and adjusted place names (Rotherwood, Templeborough, etc.) being loosely wrapped around the story of the heroes Ivanhoe/Robin Hood and company.
Firbeck Hall (c.1934) when it was converted to a Country Club (a fascinating story in itself) and visited by many celebreties of that era. The core of this building is Elizabethan (1594) with some alterations and extensions made in the early 19th century. It is a Grade 2 listed building but now sadly derelict.