copula, expression
Archaic polite copula, more polite than です and である. Used in historical or highly formal contexts, often in period dramas or very formal letters.
See also: でございます
これは私の家でござります。
This is my house. (archaic polite)
お名前は何とおっしゃいますか。わたくしは太郎でござります。
What is your name? I am Taro. (archaic polite)
An older polite copular form comprising the particle で and ござります, the polite form of ござる. Modern でございます developed from the same construction.