King Henry VIII is known for having six wives in his obsessive quest for legitimate male heirs. But Henry wasn't the only King in history to have this problem. While no one in Western Europe quite managed to top his total of six, there were a few kings that married multiple times before they got the desired heir, and occasionally a spare.

King Philip II of Spain was married a total of four times. His second marriage is quite well known in British history, as his wife was Queen Mary I of England. But before Mary and after her there were several women to whom he was married, and three of them were related to him, one way or another.

It's not often that an Almost Queen goes from the dizzying heights of a royal marriage, to plummeting down the social lists and marrying for love, but Cecily of York is one of a few exceptions to the rule!

This month we take another look at the Holy Roman Empire for our latest Almost Queen. The death of a sixteen year old Archduchess ultimately led to a marriage reshuffle that saw her youngest sister end up in France, raising the question of what might have happened had she survived.

When George William Frederick, Prince of Wales, became King George III of Great Britain in 1760, he instantly became the most eligible bachelor in Europe.

However the field of candidates was somewhat narrower than it had been for his medieval predecessors. There could no longer be a glorious match with a wealthy French princess or a well-connected Spanish infanta, because the bride had to be a Protestant. As a result George was confined to looking to Scandinavian candidates, and the young women of the German principalities.

It's rare that you have two shots at any crown, let alone the same crown – poor Margaret of Nevers missed both!

Getting a crown can be all about the timing. Catch one little bout of plague at the wrong time, or wave your husband off as he goes to fight an unwinnable battle, and suddenly you're no longer a prospective Queen! In this case Bonne managed to miss out on a French crown by a mere year, after seventeen years of marriage.

Most of our Almost Queens have been robbed of their prospective crown by death, either theirs or their husbands. In the case of Blanche of Burgundy, cousin of Margaret of Burgundy, it was divorce because of her adultery that stopped her getting the crown.

Getting an annulment for a marriage could be quite tricky, especially if a Pope decided not to play along. Pity poor Joan of Valois then, who was not only completely blameless but couldn't even hope to be defended by the Holy Father.

If becoming Queen of England was contingent on marrying King John, would you do it? Isabel of Gloucester didn't really have much choice in the matter, although to be fair at the time there was no suggestion that John would actually become King. It didn't matter in the end either as Isabel never got to be Queen!

Many princesses have missed out on the throne due to an early death, whether it was their death or that of their spouse. But in the case of Margaret of Burgundy she lost her chance at a crown due to a scandal that rocked the French court. More than that, her cousin Blanche came unexpectedly close to the crown too, and was brought down by the exact same scandal.

Technically an “Almost Empress” instead of an “Almost Queen”, Isabella of Parma came very close to becoming “Holy Roman Empress” before being struck down by smallpox.