Ygnacio Francisco Xavier Calvillo acquired the ranch. In April 1814 Ygnacio Calvillo was murdered by his grandson and others but disguised it as an Indian raid. Maria del Carmen Calvillo, the eldest of Ygnacio Calvillo six children, inherited the control and ownership of the land which was unheard of during this time period. It is said that Maria Calvillo contributed much success to the ranch land. She attempted to mend the relationships with the local Native American tribes by trading with them and providing produce from the ranch. Folklore says she would ride with her hair down on a white horse, that can still be seen today. Her will passed ownership of the property to two of her adopted children, María Concepción Gortari and Antonio Durán. María Calvillo died on January 15, 1856.
Today little of the original structures of the buildings remain. The Texas Parks and Wildlife Department bought the land and established it as the Rancho de las Cabras Historic Site in 1976 and 1977. In 1995, The National Park Service acquired Rancho de las Cabras and the site became part of the San Antonio Missions National Historical Park. In 2015, UNESCO granted the land to become a World Heritage Site along with the other missions.