Charles Pfeiffer Racine WI b1918

I posted some years ago about Charles PFEIFFER, son of Andrew and Anna PFEIFFER.I am hopeful to find anyone who knows about this family, including any of Andrew PFEIFFER's brothers: Robert Fulton PFEIFFER (was an episcopalian priest in Southern California), Oliver Wendell PFEIFFER, Edward Charles PFEIFFER/PFEIFER, Reuben John PFEIFFER (may have studied under Frank Lloyd Wright), Walter Scott PFEIFFER.They lived in Sheboygan Falls, WI and later Racine, WI.

Any help would be greatly appreciated.