Princess Lilian and Prince Bertil finally married in 1976, following a relationship of more than thirty years.
Bertil's father, King Gustaf VI Adolf, had ordered him to abstain from marrying commoner Lilian.
The couple were finally give royal approval to marry by King Carl XVI Gustaf, who took the throne in 1976.
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Wales have qualified for the Euro 2016 quarter finals after beating Northern Ireland 1-0 in Paris.
A rally has been held in Cardiff following the EU referendum to show support to migrant communities.
It's 0-0 at half time in Paris as Wales face Northern Ireland in the last 16 of Euro 2016.