John T. Denvir
John T. Denvir (1859–1943) was an American champion checker player, chess aficionado, author, and state legislator in Illinois. He served in the state senate from Chicago. He was a Democrat. He published pamphlets and books on checkers including Denvir's Guide to Checkers. References

1859 births
1943 deaths
American checkers players
Democratic Party Illinois state senators
20th-century American politicians
Politicians from Chicago