List of Famous people born on May 12nd

Ron Rubin is a Canadian veteran voice actor who has worked on many animation series including X-Men (Morph), Avengers, C.O.P.S., Police Academy, Beetlejuice, Stickin' Around and Care Bears. His voice is most easily recognized as that of Artemis from the English translation of Sailor Moon.

Gregory Arthur Phillinganes is an American keyboardist, singer-songwriter, and musical director based in Los Angeles, California. A prolific session musician, Phillinganes has contributed the role of keyboards to numerous albums representing a broad array of artists and genres. He has toured with notable artists, such as Stevie Wonder, Eric Clapton, David Gilmour and Toto, served as musical director for Michael Jackson, and has released two solo studio albums.

Gerry Eastman Studds was an American Democratic Congressman from Massachusetts who served from 1973 until 1997. He was the first openly gay member of Congress. In 1983 he was censured by the House of Representatives after he admitted to a consensual relationship with a 17-year-old page.

Marilyn Knowlden is an American former child actress. She started appearing in Hollywood films in 1931 when she was four years old. She established herself as a freelancer who worked frequently at different major film studios throughout the decade, being cast in films such as Imitation of Life, Les Misérables, and Angels with Dirty Faces. She worked with film stars such as Katharine Hepburn, James Cagney, and Claudette Colbert. In total, six of the films in which she appeared were nominated for an Academy Award for Best Picture, all within the span of seven years.

David Eugene Heineman is an American politician who served as the 39th Governor of Nebraska from 2005 to 2015. A member of the Republican Party, he previously was the 39th Treasurer of Nebraska from 1995 to 2001 and 37th Lieutenant Governor of Nebraska from 2001 to 2005.

Henry R. "Hank" Cosby was an American songwriter, arranger, producer and musician who worked for Motown Records from its formative years. Along with Sylvia Moy, Cosby was a key collaborator with Stevie Wonder from 1963–1970. Cosby co-wrote and/or co-produced three No. 1 US hits: Stevie Wonder's "Fingertips" (1963), The Supremes' "Love Child" (1968), and The Miracles' "The Tears of a Clown" (1968).

John Casey was a respected Irish geometer. He is most famous for Casey's theorem on a circle that is tangent to four other circles, an extension of Ptolemy's theorem. However, he contributed several novel proofs and perspectives on Euclidean geometry. He and Émile Lemoine are considered to be the co-founders of the modern geometry of the circle and the triangle.