Guinness is a popular Irish dry stout beer that has been brewed since 1759. It is brewed by the Guinness Brewery, which is owned by Diageo, a British multinational alcoholic beverages company. The crossword solutions for the term 'Guinness, For One' are BREWER (6 letters), ALEC (4 letters), and SIR (3 letters). BREWER refers to the company that produces Guinness, which is the Guinness Brewery. ALEC is a reference to the founder of the brewery, Arthur Guinness, who was born in 1725. SIR is a reference to the title given to Arthur Guinness in 1867, when he was knighted by Queen Victoria.