Born in a family of Zia potters in 1954 (his mother was Sofia Medina), Marcellus is a self-taught painter and these days, his wife Elizabeth often makes the pot while Marcellus paints the design.
His paintings and their pottery have been featured in art shows at the Heard Museum Guild Indian Market in Phoenix, the Santa Fe Indian Market, the Indigenous Fine Art Market in Santa Fe, the New Mexico State Fair and the Mesa Verde Indian Art Show.
Some of his art and their pottery is on display in places like the Museum of Fine Art in Boston, the Cowboy Hall of Fame in Oklahoma, Albuquerque International Airport and in many private collections.
While he has earned many awards and recognitions for his creations, he says he's most proud of his magnificent murals at the Poeh Cultural Center and Museum in Pojoaque, NM, the Mesa Verde National Park Visitor and Research Center and the UNM Sandoval Regional Medical Center.