Background
Pfeiffer, Donald John was born on April 10, 1950 in Oshkosh, Wisconsin, United States. Son of Raymond John and Ramona Jane (Gilligan) Pfeiffer.
Pfeiffer, Donald John was born on April 10, 1950 in Oshkosh, Wisconsin, United States. Son of Raymond John and Ramona Jane (Gilligan) Pfeiffer.
Bachelor of Science in Electrical Engineering cum laude, Marquette University, 1972.
Mathematics teacher, coach Lourdes Academy, Oshkosh, 1973. Corrosion control engineer Wisconsin Public Service Corporation, 1974-1976. Software engineer Johnson Controls, Inc., Milwaukee, 1977-1980, software engineering supervisor, since 1980.
Active Bel Canto Chorus, Milwaukee. Member Institute of Electrical and Electronics Engineers, Sierra Club.
Married Mary Beth Steinke, May 7, 1983. Children: Heidi Marie, Katie Anne, Daniel Joseph.