Royal courtiers, however, were adamant Starkloff was not suitable. As a twice-divorced Jewish mother of two young children, their relationship was never formally acknowledged.
At the time, non-members of the Church of England were not permitted to marry into the Royal Family, nor was divorce approved.
Despite this, their correspondence continued until his death in 1972.
In 1970, when William’s father Prince Henry was suffering from strokes, he had to return to the UK to manage his father’s estate and become a full-time working royal.
In 1972, Prince William, who was a qualified pilot and who owned several aircrafts, was competing in the Goodyear International Air Trophy. The Duchess of Gloucester was sitting in the stands to watch her son compete.