The Texicans by Nina Vida
When cholera strikes San Antonio in 1843, Aurelia Ruiz discovers that she might have the power to heal—and also to curse. Meanwhile, Joseph Kimmel, a schoolteacher in Missouri and the son of a Polish Jew, learns of his brother’s death in San Antonio and sets off for Texas. On his way, a runaway slave steals his horse. After being rescued by Henry Castro, a man who is importing immigrants to populate his planned city, Castroville, Joseph agrees to marry a young Alsatian girl to save her from a Comanche chief who has demanded her. Then Joseph encounters Aurelia and becomes enamored with her.
Comanches, Tonkaways, Mexican vaqueros, immigrant farmers, and runaway slaves all play a part in Joseph’s rebirth as a rancher, but when a renegade band of Texas Rangers descends upon the ranch, everything changes.