I don't think the law, if it existed, was particularly strongly enforced prior to the 20th c.. What is the country/timeframe/context, anyway - you could look at actual period documents to find out.
Lste 15th and early 16th century
I don't think the law, if it existed, was particularly strongly enforced prior to the 20th c.. What is the country/timeframe/context, anyway - you could look at actual period documents to find out.
Lste 15th and early 16th century
Well, I'm not the expert you're looking for, but someone on this site could be.
As a result of a quick couple of searches, I can't find any particular law, but the youngest Scottish male king was married at 17. There are some royal child marriages in England, however, with both parties basically little children. There are occasional newspaper notices of men marrying as young as 13 or 12 in England in the 17th and 18th cc.
I think insofar as your story goes, if you think the nobles will be reticient for the king to marry so young, just ask the Pope for a dispensation, which I think should not be a big problem.