Juan Domínguez y Valdez, who planned a colony in Mexican Texas but did not bring it about, was born in Havana, Cuba, in 1784. He began military training as a cadet in 1795 and joined the Mexican army on October 9, 1813, when he landed at Veracruz. He was a lieutenant colonel in the Army of the Three Guarantees, in support of the Plan of Iguala, which proclaimed Mexican independence in March 1821. Domínguez retired in 1828 as a full colonel. He married Ignacia Quintanar, the niece of a general, in 1821, and by 1828 they had four daughters.
Domínguez was granted a colonization contract by the Texas government on July 6, 1829. By its terms he was to bring 200 American and European settlers to Texas within a period of six years, to be located in an area bounded as follows: beginning on the Arkansas River where the river is intersected by the twenty-third degree of longitude west of Washington, the boundary line between Mexico and the United States; thence south along this boundary line the distance of forty leagues; thence west twenty leagues; thence north on a line parallel with the twenty-third meridian to the Arkansas River; thence with the right bank of the Arkansas River to its intersection with the twenty-third meridian, the place of beginning.
Domínguez, who resided in Mexico, appointed Victor Blanco, lieutenant governor of Texas, to execute his contract. Domínguez brought no colonists to Texas, and the contract expired in 1835.