The House of Hanover became the House of Saxe - Coburg after Victoria married Albert. This became the house of Windsor at the time of Geo V.
Frankly the only house they should be in is the jailhouse.
May I ask why? It seems that you hate royalty. However, it is not our government, Is it? If most of the British people want the royal family to be there, if only as a figurehead with limited power; what's your problem? If you're a British person who would rather not have a monarchy anymore; I could understand your attitude to some extent. After all I'm not a British citizen who has to live under a monarchy.
But if you're an American, the government in GB doesn't affect you, does it? It seems the people of Britain made their choice to stick with a monarchy, but they have to live with it. If they can't, they can leave GB, and live elsewhere, can't they?
Frankly, I wouldn't have any other than what we've got here. However, I'd take a constitutional monarchy with limited power like Great Britain has than a tyrannical, violent, oppressive one, wouldn't you?