Mina-san, this kind of super-polite Japanese is everywhere in Japan. Hope you found this one useful!

i can’t say definitively but….

i know that ござります is an archaism for ございます
so it’ not far-fetched to imagine くださりませ for くださいませ.

i’ll consult rebekah on this one as she know classical japanese 詳しく
i’m really curious now!

二ールさん
質問ありがとうございます。
I think people still use お+masu stem +になってください very often, not only in business but also in a daily conversation. When they talk to people with whom they are not very close or those who are older, they use formal expressions such as ください、くださいませんか.

くれる vs　くださる
Could you (would you) come with me?
1)ちょっと、（私と）一緒に来てくれる？Chotto, (watashi to) isshoni kite kureru?
2)ちょっと、一緒に来てくれますか？Chotto, issho ni kite kuremasu ka?
3)ちょっと、一緒に来てくださいますか？Chotto issho ni kite kudasaimasu ka?

(1) = very casual —used to one’s close friends, people who have same or lower social status
(2) = polite —used to one’s colleagues who have higher social status
(3) = even more polite—used to people who have higher social status; business situations
I would say the difference between 2 and 3 are very vague, it really depends on the speaker’s personality and the impression they want to give.