Who are the oldest pacers to take 6-wicket haul in Tests in South Africa?

Australia pacer Mitchell Starc became second-oldest fast bowler to take six-wicket haul in a Test in South Africa, achieving the feat aged 36 years and 270 days. England's Sydney Barnes tops list with figures of 7/56 at 40 years and 301 days in 1914. West Indies' Courtney Walsh is third with figures of 6/80 at 36 years and 77 days.