Predominantly a floral painter, Martin Rettig was the younger brother of John Rettig. Born in 1869, Martin studied under Duveneck at the Art Academy of Cincinnati and would later become known as an authority on the works of Duveneck. He was one of the first decorators at Rookwood Pottery, where he stayed from 1882 through 1885. He worked primarily in Limoges, France, in the Japanese style typical of Rookwood at the time. Martin was the president of the Cincinnati Art Club from 1918 through 1920 and passed away in 1956, leaving a large body of floral oil paintings as his legacy.
Nathaniel Grauwelman as well as various staff and volunteers of WCHS