IIRC, that was the big problem with Lord Darnley and Mary Queen of Scots. He wanted the Scottish Crown Matrimonial, and the title of King, and she didn't want to give it to him. And we all see how well that worked out...
I can't check it right now but that's what Wiki says:
Henry Stuart, Lord Darnley was born in 1545, at Temple Newsam, Leeds, West Yorkshire, England, the son of the 4th Earl of Lennox, and his wife, Margaret Douglas. He was related to his future wife in at least three ways: they shared a grandmother in Margaret Tudor, putting both Mary and Darnley high in the line of succession for the English throne; Darnley was a descendant of a daughter of James II of Scotland and thus also in line for the throne of Scotland; and Darnley's family surname was due to a much more ancient connection to his male-line ancestor, Alexander Stewart, 4th High Steward of Scotland.
On their marriage, which took place 29 July 1565 in the chapel of Palace of Holyroodhouse in Edinburgh, Darnley was given the title of King of Scots, but he was a king consort only, with no royal powers."
The last info was new to me, too but I understand why Mary tried to keep him from the power - because his father was well-known for trying to get the throne of Scotland for himself while his mother had been the favorite of Mary Tudor for the succession in England and was thus regarded with hate by Elizabeth I. Both parents had so many connections, supporters etc. and Darnley had a weak character - to give him Royal power would have meant to endanger her own position.
While Prince Albert was to "German" in his connections and thinking and thus much too autocratic for the Britsih parliament of his time to want him as King Consort. While today it doesn't mean naything more than just another title confered on a person without real power behind it.