On July 13, 1846, Cuney was elected brigadier general of the First Brigade of the Fourth Division of the Texas Militia. Also in 1846 he was elected to the state Senate and represented Austin and Fort Bend counties in the First and Second legislatures until 1848. On February 22, 1848, he was elected a state delegate to the national Democratic convention in Baltimore. In 1851 he was a candidate for the state Senate.
On his plantation, Sunnyside, twelve miles southeast of Hempstead on Iron Creek, Cuney had 2,000 acres and 105 slaves by 1850. Among them was Adeline Stuart, who bore him eight children and whom he eventually set free. Among their sons was Norris Wright Cuney, who became a prominent politician in Galveston. On September 26, 1851, Cuney married Adeline Spurlock, daughter of James L. and Eliza Spurlock, also of Austin County. Cuney died at his Austin County home on January 8, 1866. He was a member of the Texas Veterans Association.
Grandfather of Maud Cuney-Hare.
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