Every example I've been able to find has it at the beginning of the sentence, but while it seems like, unless it's actually part of a book title or company name or something, most proper nouns don't call for capitalizing the T in a preceding "the" mid-sentence, like people write "...the Beatles," not "...The Beatles," "...the East Coast," not "...The East Coast," and "...the President of the United States," not "...The President of The United States," I've seen that when Queen Elizabeth is referred to as a... I guess... pronoun of sorts, it's written "Her Majesty The Queen," the T in "the" getting capitalized. So I'm wondering if that's true of a royal family name, too, any royal family, not just the British one, for example:
The current British Royal Family is of The House of Windsor.
Or if that's not correct:
The current British Royal Family is of the House of Windsor.
So what's the proper way to write a royal family's name or house that's preceded by a "the" when it appears mid-sentence rather than at the beginning of a sentence, like was Tsar Nicholas II of the House of Romanov or of The House of Romanov?
The reason I'm asking is I think it is supposed to be capitalized, like I think I remember seeing that, but I'm not sure and I can't find anything that says, so maybe I'm just imagining it. I don't now.