How many storeys are in the castle inherited by David Gregory?
David Gregory (physician): David Gregory (20 December 1625 – 1720) was a Scottish physician and inventor. David Gregory (physician):  He inherited Kinnairdy Castle in 1664. Kinnairdy Castle: Kinnairdy Castle is a tower house, having five storeys and a garret, two miles south of Aberchirder, Aberdeenshire, Scotland.
five