This delightful small fortalice, dating apparenltly from the early 17^th century, stand about three miles west of OldMeldrum.  It conforms to the T-Plan, with a long main block of three storeys running north and south, and a circular stair-tower projecting westwards midway along the west front. This is corbelled out to the square at the top to house a watch-chamber, reached by a turret-stair in the south-west re-entrant angle.  The corbelling here is quite elaborate.  The waling is otherwise plain and roughcast, and the gables are crow-stepped.  A more modern wing for domestics has been added to the south-west.

The entrance is in the foot of the stair-tower, but two or more modern doorways have been opened on either side of this wets front.  The basement contains two vaulted chambers, that to the south being the kitchen, with a wide arched fireplace and a stone basin nearby.  The Hall on the first floor has been subdivided by later partitions, and there have been other alterations at this level; the small turret-stair, for instance, is now inaccessible.

Mounie was a possession of the Seton Family, cadets of Alexander Seton, the famous Earl of Dunfermline and Chancellor of Scotland in the 17^th century.  Pitmedden nearby was an important Seton seat, and George Seton of Mounie was second son of Lord Pitmedden.  There are many Seton portraits and mementos in the house including a picture of John Seton of Auquhorthies, Chamberlain to the Earl of Dunfermline. 

The Seton's of Mounie, both the 1st and 2nd families, were lineal cadets of the Seton's of Meldrum.  The second family was a direct cadet of the Seton's of Pitmedden.  The lands of Mounie came into the possession of John Seton, of Lumphard, Broomhill and Mounie, 2^nd son of William Seton 5^th of Meldrum by his first wife Janet Gordon of Lesmoir.  John Seton married Marjory Patton of Pitmedden during the early 16^th century, and which connection later brought that house into the family, to John’s half-brother, from his father’s second marriage to Margaret Innes of Leuchars, James Seton of Bourtie and Pitmedden.  John’s other half-brother (from Margaret Innes), was George Seton, the noted Chancellor of the Cathedral Church of Aberdeen and builder of Barra Castle.

It was John who enlarged and built the main house at Mounie during the mid-1500’s.  Though within a short time the family was obliged to sell Mounie, to John Urquhart of Craigfintry and his wife Elizabeth Seton, heiress of the Seton's of Meldrum.  Thier son, Patrick Urquhart sold Mounie to Robert Farqhuar in the mid-1600’s, it was re-acquired by George Seton, 2^nd son of Lord Pitmedden, in 1714.

The Seeton's of Nova Scotia are cousins of the 1st Seton's of Mounie, and from John Seton of Auquhorthies, Chamberlain to the Earls of Dunfermline at Fyvie Castle.  John Seton, goldsmith in Edinburgh of the family of Meldrum who also had a son Thomas Seaton (or Seton) who died and was buried on the Ilse of Man, and a son Alexander Seaton (or Seton) who attended the University of Aberdeen and who was later a prominent Quaker Minister in Co. Down, Ireland circa 1689 - 1723 along with the Rev'd Anthony Sharp there in Hillsborough, as well as other issue, was descended likewise from these Seton's, and were cousins of James Seton of Menie as well.  The Seeton's of Nova Scotia also married into the old Aberdeenshire family of Dumbreck, Dunbrack in Nova Scotia and were active mason's there as well as involved in the trans-continental shipping industry at Halifax.