People from Fort Wayne

Robert Frank Borkenstein (August 31, 1912 – August 10, 2002) was an American inventor, researcher, and professor. His inventions include the Breathalyzer.

Richard Joseph Grosh (born October 29, 1927) was the thirteenth president of Rensselaer Polytechnic Institute.
He was born on October 29, 1927, in Fort Wayne, Indiana. He attended Purdue University, where he received B.S., M.S. and P.h.D. degrees in mechanical engineering (in 1950, 1952 and 1953 respectively). In 1953, he was appointed assistant professor of mechanical engineering at Purdue. In 1953, he was appointed professor of mechanical engineering and in 1961, he was appointed head of the School of Mechanical Engineering at Purdue. In 1965, he was named associate dean of the Schools of Engineering. In 1967, he was appointed dean of the Schools of Engineering. In 1971, he was appointed president of Rensselaer Polytechnic Institute. In 1976, he left Rensselaer to become CEO of Ranco Inc. of Columbus, Ohio and remained in that post until the company was acquired by Invensys in 1987.In 1969, he was elected as a member into the National Academy of Engineering for significant contributions to heat transfer research. In 1991, he received the Outstanding Mechanical Engineer Award from the Purdue University School of Mechanical Engineering. He served on the board of the Maine Maritime Academy from 1997 until 2012.

Russell Wayne Kruse (December 9, 1922 – May 4, 2007) was an American auctioneer best known for building the business of auctioning classic cars through Kruse International.Born in Auburn, Indiana, he took up farming after graduating from high school. After losing crops to flooding two years in a row, he took up auctioneering to cover the costs of raising his seven children. He attended the Reppert School of Auctioneering in December 1952 and started a local real estate and farm auction business. He was a licensed auctioneer, real estate broker and certified residential appraiser in the state of Indiana.In 1971, the Auburn Chamber of Commerce needed fundraising for their annual classic-car show. Kruse suggested auctioning off some of the antique cars. When a bidder's $61,000 bid for a locally-made Duesenberg was turned down, the press picked up the story, and his fame as a car auctioneer took off. He started the Kruse Auction Institute in 1972 to give pre-licensing training to auctioneers. Russell was on the original Indiana Board of Auctioneers and served as chairman. He was also a past president of the Indiana Auctioneer's Association, and a member of their hall of fame, along with two of his son's - Dean Kruse and Dennis Kruse.
Because of the lucrative divisions that auctioned real estate and oil field equipment, ITT bought Kruse International in 1981, but the family bought it back in 1987. eBay then bought the company in 1999 but sold it back in 2003. Three of his sons are involved in the auction business: Dean Kruse, Dennis Kruse and Daniel Kruse, as well as eight grandchildren. He founded the Kruse Auction Institute in 1972, and served as an instructor at the Reppert School of Auctioneering from 1996 until his death in 2007.
His first wife, Luella (Boger), the mother of his seven children, died in 2000. Kruse died in Fort Wayne, Indiana of a stroke, aged 84.

Ralph Hauenstein (March 20, 1912 – January 10, 2016) was an American philanthropist, army officer and business leader, best known as a newspaper editor. His leadership has produced institutions such as the Hauenstein Center for Presidential Studies at Grand Valley State University, the Hauenstein Parkinsons and Neuroscience Centers at Saint Mary's Hospital and the Grace Hauenstein Library at Aquinas College.

Margaret Ringenberg (née Ray; June 17, 1921 – July 28, 2008) was an American aviator, who had logged more than 40,000 hours of flying time during her career.

Ann L. Colone (June 11, 1930 – June 12, 2007) was a pioneering female broadcaster in Fort Wayne, Indiana, United States, whose career as TV host spanned three decades. She was the first female radio disc jockey for WGL (AM) and was a regular contributor at WANE-TV, which is a CBS affiliate, since it went on air in 1958, and she became well known as the first local female TV host of her own afternoon program with residents, local news makers, and national celebrities as guests.