By 1952 the company had been forced into a winding up process by three local firms and a printer from Rochdale. The liquidation of the firm was, however, a long-drawn-out affair, with a new liquidator being appointed in 1971, who was still carrying out his duties in 1977.
The company trademark was a depiction of Dumbarton Castle.
Amongst the beers produced by the firm were: Brown Ale, Nut Brown Ale, Pale Ale, Sparkling Ale, and Strong Ale.
The site has since been cleared, and is now used for car parking.
Books and periodicals
Bell, B. Reminiscences of Gillespie's brewery, Dumbarton. Scottish Brewing Archive Newsletter, 9, 1987, pp.13-14.