John Fuller, Senior married Elizabeth Rose, daughter of Fulke and Elizabeth Rose of Jamaica, in 1703. He managed the family sugar plantations in Jamaica and in 1705 took control of the family furnace where he became an ironmaster and gunfounder. His wife’s mother later married Sir Hans Sloane, making Sloane Fuller’s stepfather-in-law.
J. S. Hodgkinson, ‘Fuller family (per. c.1650-1803)’, Oxford Dictionary of National Biography, (Oxford University Press, 2004; online edn, May 2005 http://www.oxforddnb.com/view/article/47494 [accessed 2 July 2013]).
Relationship to Sloane: Virtual International Authority File: