There is no prominent jazz artist by the name of Tin Man. It is possible that you may be thinking of a different artist or group. Jazz artists such as Miles Davis, John Coltrane, or Louis Armstrong are more well-known in the jazz genre.

Stuart Davis was an artist whose work was influenced by jazz music. Critics called his work modern and referred to him as leading the style.

No, he wouldn't be classified as a gospel artist even though he had a very soulful voice, he is known as a jazz artist

Bill Davis - artist - was born in 1949.

Jelly Roll Morton is the self appointed father of jazz back around 1915. Of course this is a widely debated topic. There were so many musicians who influenced jazz it is very hard to name one specific person. Miles Davis summarized the history of jazz in four words: "Louis Armstrong, Charlie Parker."