(San Ildefonso Pueblo, New Mexico, 1887 - 1980, San Ildefonso Pueblo, New Mexico)
© The Estate of Maria Martinez
née Maria Montoya, married Julian in 1904. They had four sons... 2 of which- Popovi Da and Adam Martinez... became artists. http://www.academia.edu/30717042/Julian_Martinez
One of the most famous Native American potters, Maria Martinez of San Ildefonso Pueblo, along with her husband, Julian, developed the polished matte black-on-black ware style in 1918-19. Maria made the pots and Julian painted the stylized deisgns. Due to an increased popularity of their work, Maria and Julian began signing their pieces in 1925. All works from 1925 until Julian's death in 1943 are signed "Marie + Julian." Maria used the named "Marie" because she thought it would encourage non-Native American purchasers to become patrons of her art.
Some information from Getty's Union List of Artist Names ® (ULAN)