John Andrew is listed in 1782 as the heir to John Miller, his grandfather, miller in Coldstream. In 1810, the mill passed to William Fulton of Beith, by whom it was sold to David Kerr, merchant of Beith and Andrew Gibson, baker, in 1815. William Caldwell then purchased the mill and it remained with the family for the next hundred years. Thomas Caldwell was the miller in 1841, but by 1871 Thomas is farming and the miller is Robert Jack. David Fergie is the miller in 1881, Thomas having retired. By 1891 Robert Jack is the miller again and the sons of Thomas, William and Thomas, are the owners. In 1921 the Smith family bought the mill from Thomas Caldwell, Joseph Smith having been the miller since 1911. Andrew, son of Joseph, worked the mill until 1991.