When he took that fateful voyage upon that tiny ship, The Professor (aka Russell Johnson) was a high school teacher, 35 years old, from Cleveland, Ohio. His name was Roy Hinkley, but it was a name he seldom heard because the rest of the group had nicknamed him "The Professor" and that's the only name they used. While growing up, the Professor was the youngest Eagle Scout in the entire city, and there was a great deal of Jack Armstrong, the All-American Boy, in him. He had a strictly scientific and logical approach to life. This true-blue-harry attitude about girls and other issues of moral principle gave the Professor a righteous and somewhat "square" attitude. Mary Ann treated the Professor like an older, smarter brother; and although Ginger might have had a more amorous attraction to him, he seemed almost oblivious to her advances. The Professor was well versed in all the sciences: chemistry, botany, biology and geography. Unfortunately he was not well versed in the science of sea navigation - this was the Skipper's expertise! He also attended several colleges and universities for quite a few years and earned the following degrees: he had a B.A. from the University of Southern California, a B.S. from the University of California at Los Angeles, an M.A. from Southern Methodist University, and a PhD from Texas Christian University. His specialty was dull metals and he was at work on two books. The first book was entitled: "Rust: The Real Red Menace, " and his second book (the reason he took the "three-hour island tour") was entitled: "Fun with Ferns" (He was also particularly interested in island areas: the sand and soil, the vegetation, local natives and their customs, etc. That was the reason for his trip to that locality, and the real reason he happened to be aboard the S.S. Minnow. In the group of castaways, the Professor was the voice of reason. Very often he was the one who prevented the rest of the group from taking rash actions. The others looked to him and his great store of scientific knowledge, especially as it might affect the possibility of rescue. And it was to this end that the Professor dedicated himself. He also had an aptitude of gadgetry which is an obvious asset to the castaways. It was not widely known that prior to his "three hour tour" on the S.S. Minnow, the Professor had been married to Carol Ann (Martin-Hinkley) Brady, and was the biological father of Marcia, Jan and Cindy Brady prior to her re-marriage to Mike Brady. The Professor (aka Russell Johnson) married Kay Levey on July 23, 1949. Their son, David, ran the AIDS program for Los Angeles, California, until David's own death from complications of AIDS in 1994. Johnson was a full-time volunteer for AIDS research fundraising since his son was diagnosed. He also had a daughter with Levey, Kim. Kay Levey died on January 20, 1980 in Century City, California. In 1982, Johnson married Constance Dane. He died at his home in Washington, where he lived with his wife, Connie. She and their daughter, Kimberly, were at his side, said agent Mike Eisenstadt. Johnson is also survived by a stepson, Court, and a grandson, he said. Johnson worked up until his death, signing autographs over the holidays, said Eisenstadt. He called Johnson's death "unexpected." Johnson died from kidney failure.