How many storeys does this tower house have which David Gregory inherited in 1664?
David Gregory (physician) David Gregory (20 December 1625 – 1720) was a Scottish physician and inventor. His surname is sometimes spelt as Gregorie, the original Scottish spelling. He inherited Kinnairdy Castle in 1664. Three of his twenty-nine children became mathematics professors. He is credited with inventing a military cannon that Isaac Newton described as "being destructive to the human species". Copies and details of the model no longer exist. Gregory's use of a barometer to predict farming-related weather conditions led him to be accused of witchcraft by Presbyterian ministers from Aberdeen, although he was never convicted.
Craiglockhart Castle Craiglockhart Castle is a ruined tower house in the Craiglockhart district of Edinburgh, Scotland. It is situated in the Craiglockhart Campus of Edinburgh Napier University, to the north of Wester Craiglockhart Hill. Historic Scotland record that the tower was built by the Lockharts of Lee in the 15th century, although other sources state that it was the work of the Kincaid family during the 12th century. It was originally four storeys high, but now only the first and part of the second storey remain. The tower measures 8.7 by , and the walls are 1.5 m thick. The ruin is protected as a category B listed building, and as a scheduled monument.