Haffner Family Frank Sr. New York

My grandfather Frank Haffner Jr. was born July 4 1879 in New York his mothers name was Nettie. I know his father was a broker on Wall Street he had a office there with a partner. He lost his mony in a market crash around 1890. I also know he move to Ohmaha, Nebraska and died there. He had other children but I can't remmber thier names. This branch of the Haffner's were said to have to the USA around 1812 as mersonnaries hired by the British to figth for them. Anyone Haveing any imfo. I would love to hear from you. Please E-Mail thanks Larry Streeter