John Holahan
Guyanese-born British businessman
Born on: September 20, 1916Died on: August 23, 2000
Aged: 83 years 338 days (1007 months)
Birth Sign: Virgo
Robert William Collymore was a Guyanese-born Kenyan businessman who served as the chief executive officer at Safaricom, a multi-national telecommunications company based in Kenya.
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