Lochside Distillery, located in Montrose, Angus, began its operations not as a distillery but as a brewery back in the 18th century. Interestingly, it was not founded as Lochside Distillery in 1830. It transitioned into a distillery much later, in 1957, by Joseph W. Hobbs. Hence, there is a common misconception regarding its founding in 1830 as a distillery; it was, in fact, still a brewery during that period. You can find more details on this here.
Here's an image of Lochside Distillery:
For information on the transition from brewery to distillery, you can explore more about the timeline of Lochside from sources such as Whiskipedia.