The couple had been married for 49 years and Mr Francis said he was particularly pleased they had travelled widely in the last few years, clocking up some cherished memories.
Some of those trips were taken when Mr Francis, who at one time was ranked as the world's No1 international rugby referee, was charged with helping select referees for World Cup games.
Mr Francis said being able to take his wife on overseas trips was "payback" for her loyalty and help during his career.
Eva Francis was well known for her wit and sense of humour, and was devoted to her four children, Jenny, Tony, Geoffrey and Stephen, along with her grandchildren.