William K. "Uncle Billy" Martin (1867 â July 10, 1949) was an American college football and college baseball coach. He was the third head football coach at Wabash College in Crawfordsville, Indiana, serving for one season, in 1887 season, and compiling a record of 0âÂÂ1. Martin was also the head baseball coach at Wabash from 1889 to 1892, tallying a mark of 19âÂÂ10. Martin died on July 10, 1949, at his home in Crawfordsville.