William Maxwell & Co was a subsidiary company of Peter J Russell, who alongside sister firm Ian Macleod & Co, produced a range of blends and independent single malt bottlings. This is their Dun Bheagan single malt brand, named after the castle on the Isle of Skye. Peter J Russell rebranded as Ian Macleod Distillers in 2003, at the same time as achieving their long-held ambition of becoming distillery owners, acquiring Glengoyne, and later, Tamdhu and Rosebank.

Distilled in December 1989 and bottled in 2016, this 26 year old Miltonduff was matured exclusively in hogshead #449010 which yielded 324 bottles.