Bader is a German occupational surname derived from the German word "Bad" meaning "bath". It originally referred to the owners or attendants of bathhouses, who subsequently took on other tasks including cutting hair and dentistry. List of people with surname Bader. Alfred Bader (1924–2018), Canadian industrialist and art collector. Ali Bader (born 1970), Iraqi novelist. Art Bader (1886–1957), Major League Baseball player. Beth Bader (born 1973), American professional golfer. Clarisse Bader (1840–1902), French writer. Curt Bader (born 1961), American sprint canoer.
https://en.wikipedia.org/wiki/Bader