JFK with his wife Jackie O

Even before she married John F. Kennedy and became First Lady Jackie Kennedy had a deep love of Ireland, it has been revealed.

"The more she traveled in Ireland the more she wanted to be Irish," a close relative has said.

While in Ireland, Jackie even kissed the Blarney Stone.

Her half sister Yushan Auchincloss has revealed how she and Jackie traveled through Ireland and Scotland in 1949 and Jackie fell in love with her own Irish roots.

""She was always studying the complicated history of the kings of Ireland," Auchincloss wrote.

"She was sort of royalist from an historical perspective. She loved those old castles and battles.

"She knew all about the English legends but she was really crazy abut the Irish kings.

"She knew that her grandfather's family came from Ireland. She was always very proud of her European roots, the French but also the Irish. The pubs and the village people caught her imagination.

We went to southern Ireland and Dublin, Blarney, Limerick, Cork. She tilted over backwards and kissed the Blarney Stone, as her feet were held for good luck."