Undoubtedly the world's most famous Native American potter, Maria Montoya Martinez was born in the Tewa pueblo of San Ildefonso around 1887 (her baptism certificate says 1887, she herself thought she might have been 7 at the time). As she grew up, Maria observed her aunt, Nicolasa, and learned the basics of the traditional art of pottery making from her. In the early years of her career, Maria produced the traditional polychrome pottery of her village, generally black and terra cotta decorations painted on a background of white or tan. She shaped her pots the age-old way, by carefully hand-coiling and pinching the clay, then smoothing the inner and outer surfaces with gourd scrapers. Early on her pots were recognized as the thinnest, most beautifully shaped pots being made at San Ildefonso. Her husband, Julian, an accomplished painter of hides, paper and walls, decorated the pots for her, then worked with her in the firing of them.

Maria and Julian were married in 1904 and almost from the beginning of their relationship they were traveling to demonstrate their craft at various fairs and expositions. They spent their honeymoon in 1904 demonstrating pottery making at the Louisiana Purchase Exhibition at the St. Louis Worlds Fair. They demonstrated again at the Panama California Expo in San Diego in 1915, the Chicago Worlds Fair in 1934, and the Golden Gate International Expo in 1939. Native American craft fairs provided other marketing opportunities, and by signing her work Maria both heightened her visibility and commanded higher prices. In 1954, she won the Craftsmanship Medal, the nation's highest honor, from the American Institute of Architects.

Contrary to legend implying that Maria "discovered" the black pottery process, Dr. Edgar Lee Hewett, Professor of Archaeology at the University of New Mexico in Albuquerque and Director of the Museum of New Mexico in Santa Fe, found shards of prehistoric black pottery while excavating in the ruins at Bandelier National Monument in 1908. To preserve and showcase that ancient product Hewett sought a skilled pueblo potter who could re-create that ancient pottery style for him. Everyone he asked referred him to Maria. Together they worked out a deal and he pre-ordered a series of black-on-black pots from her. That led to more than a decade of experimentation, until Maria and Julian were satisfied with their results in recreating that style of black ware. Their method required smothering the fire with manure during the firing process, effectively creating an "oxygen-reduction process" that turned the red pots black. Julian worked out the other half of the "black-on-black" process when he began painting his designs "in the negative," using a matte black slip on the polished pot surface to create his decorations. Once fired, that demonstrated the technique that has become so famous today. Still, Maria wasn't really happy with those first black-on-black pots until Hewett came to visit with some friends and students of his. Those visitors bought virtually every pot Maria had on hand and they encouraged her to make more. Maria responded by refining her process and technique with the clay and the fire. Julian responded by refining his designs and decorations. Together they elevated their art to a level not approached anywhere else for at least 10 years.

According to Susan Peterson in The Living Tradition of Maria Martinez, the six distinct steps involved in the creation of blackware pottery include, "finding and collecting the clay, forming a pot, scraping and sanding the pot to remove surface irregularities, applying the iron-bearing slip and burnishing it to a high sheen with a smooth stone, decorating the pot with another slip, and firing the pot."

Julian faced a challenge in attempting to decorate Maria's pots. The process he finally settled on involved polishing the background first and then applying the matte slip decoration. In 1918, Julian finished the first decorated black ware pot with a matte background and a polished avanyu (horned water serpent) design. Many of Julian's decorations were patterns adopted from ancient vessels of the Pueblos. Some of the patterns consisted of feathers, birds, road runner tracks, rain, clouds, mountains, and zigzags or kiva steps.

As her pots attracted more and more attention for their unique beauty, Maria began to charge modest prices. With the demand for her pots growing, she realized that her work could enrich the lives of the people of her pueblo, artistically and economically. In the ages-old tribal manner, she generously shared her techniques with others. Martinez was the matriarch of a "craft lineage" that continues today. In a career that spanned seven decades, her pottery brought honors and acclaim, revitalizing the art and the economy of San Ildefonso Pueblo.

Even though Julian decorated the pots, Maria claimed all the work in the early years because pottery was still considered a woman's job in the Pueblo. Maria left Julian's signature off their pieces to respect the Pueblo culture until 1925. After that, "Marie + Julian" was the official signature on their decorated pottery until Julian's death in 1943 (and she used "Marie" because Chester Faris, Director of the Santa Fe Indian School, had convinced her that was a name more familiar to the Anglo buying public). Undecorated pots during those years were signed simply "Marie." Maria's family began helping more with the pottery business after Julian's death. From 1943 to 1956 Maria's son Adam took over collecting clay while his wife Santana took over painting decorations. "Marie + Santana" was the signature on their pots. Popovi Da began learning to paint with Santana in 1950 and in 1956 he took over doing most of Maria's painting. The signature became "Maria/Popovi" until 1971 when Popovi passed on. He'd also often been busy with tribal politics during those years and, at times, couldn't keep up with painting Maria's pots. As Maria almost never painted a pot, those pots are plain and signed "Maria Poveka" (Poveka being her Tewa name, meaning: "pond lily"). Today, values on Maria's work vary based on the signature on the bottom, those with "Maria + Popovi" being valued highest.

After making pots for almost 80 years, Maria passed on in 1980.