A young Philip and the then-Princess Elizabeth spent some of the early years of their marriage living at Villa Guardamangia, a palazzo-style residence on the outskirts of the capital Valletta.
While they rarely shared emotion or affection in public, the Queen was in no doubt of the importance that Philip played across more than 70 years of marriage.
The Royal Family has released two photographs of the Queen and Prince Charles walking together to mark the Easter weekend.