Bonshaw Tower is a 16th century tower house built by the Irving family.
The Irvings or Irvines held the lands from the 14th century and possibly earlier. The tower was burned by the English in 1544 and later rebuilt.
In 1668 John Irving of Bonshaw, a bailie of the burgh of Dumfries, bought the mortgaged estate of Drumcoltran.
An adjoining two storey mansion was built in the 18th century.