| Site of the Mission San Ildefonso |
| Address | County | utm_east |
| Milam |
| utm_zone | utm_north |
| San Gabriel | 14 |
| Latitude | Longitude | ||
| N 30.69410° | W -97.09383° |
| Location | Repair Condition | |
| North side of FM908 west of CR429 | Good |
| Marker Text |
| Established by Franciscan missionaries in 1749 with the hope of civilizing |
| and christianizing the Coco, Mayeye, Orcoquiza, Karankawa, and other tribes of |
| Indians. The martyrdom of Padre Jose Ganzabal and the circumstances |
| connected therewith caused the departure of the Indians and the friars and the |
| removal of this mission to the San Marcos River in 1755. Reestablished in 1762 |
| on the Nueces River for the conversion of the Lipan Apaches with the new name |
| of Mission San Lorenzo de la Santa Cruz. |