The partnership of Gillespie, Sons & Co was formed in 1889 by Alexander Gillespie and his son James, following the dissolution of Gillespie, Gray & Co.
The company had two breweries: the Crown Brewery in Slatefield Street, Glasgow, and the Crown Brewery in Brewery Lane, Dumbarton, with production being concentrated at the Glasgow site.
The company's trademark was a crown.
Amongst the beers produced by the firm were: Nut Brown Ale, Pale Ale, and Sparkling Pale Ale.
The business interests of the company were acquired through the incorporation of Gillespie, Sons & Co Ltd in 1895.
The Crown Brewery in Glasgow was designed by the well regarded brewery architect Peter Lyle Henderson.
The site is now occupied by a modern housing development.
The Crown Brewery in Dumbarton was originally known as the Dumbarton Brewery, and was occupied by Alexander Gillespie from around 1861.
The site has since been cleared, and is now used for car parking.