In case you have not yet heard the news, Lord Nicholas Windsor, son of the Duke and Duchess of Kent, will wed Paola Frankopan, a British-born Croatian princess, by year's end in the church of Santo Stephano degli Abissini inside Vatican City State. Both have been received into the Roman Catholic Church from the Church of England.
With his entrance into the Church of Rome in 2001, Lord Windsor relinquished his claim, distant though it is, to the throne of England in accord with the 1701 Act of Settlement which barred any Catholic - or one married to a Catholic - from ascending the throne of England.
Her Majesty, the Queen, is said to be both "delighted" and "very pleased" about the coming marriage.
My congratulations and prayers to the couple.
More here and here.