Timothy Lewis is a member of the Tohono O'odham nation, located in southern Arizona.  Tim grew up in the San Xavier Reservation, near Tucson, Arizona, and graduated from Sherman Indian High School in Riverside, California.  Tim is self and apprentice-trained, and has continued his training through participation in national and international specialized courses and conferences, in institutions such as the Smithsonian Institution, Washington D.C., USA and the International Institute for Conservation of Historic and Artistic Works, Madrid, Spain.  He is a member of the AIC.  His specialty is conservation and restoration of mural and oil paintings and polychrome sculptures.  He has been a practicing professional since 1992 and art conservator at the Mission Church of San Xavier del Bac (Tucson, Arizona) since 2001.

Matilde Rubio was born and grew up in Madrid, Spain.  She completed the Bachelor's degree in Fine Arts (Conservation and Restoration of Works of Art) at the University of Seville, Spain (1981-1986). She received sculpture and design tuition from Spanish sculptor Santiago de Santiago and painting tuition from Spanish artist Pedro Marcos Bustamante.  Matilde has attended and participated in numerous national and international art conservation conferences and workshops.  Her specialty is conservation and restoration of mural and oil paintings and polychrome sculptures.  She has been a practicing professional since 1986 and a conservator/restorer at the Mission Church of San Xavier del Bac since 2001.