The Old Castle of Ellon was built in the late 16th century – reputedly from the stone of the Castle of Kinmuck – as the seat of the Kennedys of Kermuck. It was rebuilt around 1706 to 1715 and again between 1781 and 1785. By 1801 it was in ruins, and in 1851 it was demolished and the stone used in the construction of the new Ellon Castle.