Lancaster
Lancaster (name) means a city in Lancashire, England, and the name of a historic English royal house; also many towns across the United States, Canada, and Australia. Example: “The House of Lancaster fought the Wars of the Roses against the House of York.”
Fill the gap
Can you complete this real example?
The House of _____ fought the Wars of the Roses against the House of York.
Etymology
From Old English, "the Roman fort on the River Lune," from Lune plus ceaster ("town").