Mary —, 1966 Commonwealth long jump gold medallist (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
rand
(Other definitions for rand that I've seen before include "South African currency unit" , "Currency of South Africa" , "South African money" , "our 1/4 Across [GOLD MEDALLIST] in 1964" , "Monetary unit in South Africa" .)