All of the German royal families had rules about who princes could marry. If the woman was not high enough in rank (ebenbuertig) the resulting children could not be considered members of the royal house or in line to the throne. In some cases just marrying a non-royal woman could be grounds for the prince involved to lose his place in the succession, although typically a "morganatic marriage" was arranged and the children received lesser titles. The mediatized houses that lost their principalities after the Napoleonic Wars also maintained some similar rules, although typically less strict ones regarding the rank of the spouse.
My question is when the the Liechtenstein royals stop upholding these rules? Wikipedia suggests that it was at some point after the mid 1960s when a prince married a commoner and their children were given the titles of Baron/Baroness von Landskron. Whereas now we see that the current ruling prince's second son married a woman with no noble ancestry and her son is still called a prince. It seems like the practice changed at some point in the early 1970s. Has anything been written or announced about this?
It's also unclear what the old rule was. Almost all the princes seemed to marry a countess or a woman from a royal house, but one who married a woman from the untitled nobility in the 1940s had a child that was recognized as part of the ruling family. So the whole thing is a bit unclear.
My question is when the the Liechtenstein royals stop upholding these rules? Wikipedia suggests that it was at some point after the mid 1960s when a prince married a commoner and their children were given the titles of Baron/Baroness von Landskron. Whereas now we see that the current ruling prince's second son married a woman with no noble ancestry and her son is still called a prince. It seems like the practice changed at some point in the early 1970s. Has anything been written or announced about this?
It's also unclear what the old rule was. Almost all the princes seemed to marry a countess or a woman from a royal house, but one who married a woman from the untitled nobility in the 1940s had a child that was recognized as part of the ruling family. So the whole thing is a bit unclear.