The original 13th-century tower of Drum Castle has been suggested as the work of medieval architect Richard Cementarius, who built the Brig o' Balgownie, the first Bridge of Don, in Old Aberdeen.

The castle and its grounds were granted to William de Irwyn in 1323 by Robert the Bruce, and remained in the possession of Clan Irvine until 1975.

William de Irwyn (of the Irvings of Bonshaw clan) was armour bearer/secretary (and neighbour) to King Robert the Bruce.

[3] Drum played a role in the Covenanting Rebellion (as did nearby Muchalls Castle) leading to its being attacked and sacked three times.

The summary states that the tower was built in 1280–1300, that the Jacobean Wing was added in 1619 and that modifications were made ca.

The current (early 2020) NTS website, however, discusses its Garden of Historic Roses, spread out over four distinct areas.

The grand Victorian library with over 4,000 books was one of the attractions; the castle was also offering a "programme of temporary exhibitions throughout the year".