Stanley Mainwaring Farrar Sylvester (13 June 1912 — 20 October 2003) was an Anglo-Argentine first-class cricketer, businessman and diplomat.
Sylvester played first-class cricket for Argentina in January 1938, making a single appearance against Sir T. E. W. Brinckman's touring XI at Buenos Aires.
[3] Sylvester was the honorary British consul at Rosario, a role he carried out alongside his management of a meat processing plant owned by the Swift Company, which in 1970 had laid of 15,000 workers.
The Rosario PRA demanded that the Swift Company rehire 300 workers, reduce work quotas for their workers, terminate the indiscriminate firing of workers, provide medical attention to employees, reduce the cold working conditions in the packing plant, distribute $50,000 worth of food to working-class neighbourhoods, and publish their communiqués in public media.
[5] In November 2003, former PRA guerrilla Enrique Gorriarán Merlo travelled to Rosario to apologise to Sylvester for his 1971 kidnapping, but Sylvester had passed away 20 days prior on 20 October 2003; he instead issued an apology to his son, Juan.