Saga of a Texas Ranger by Jeffery Robenalt

Set in the Republic of Texas, circa1840, Saga of a Texas Ranger is the first in a series of of four historic Westerns written by Jeffery Robenalt. Sixteen year old Caleb McAdams and his family sell their prosperous farm in Tennessee and head for Texas to escape a deadly blood feud, but find that danger also lurks on the Texas frontier. While Caleb is out rounding up wild longhorns, his family is massacred by the Comanches during the Great Raid of 1840. Seeking revenge, Caleb volunteers to fight with Captain Jack Hays and the Texas Rangers at the Battle of Plum Creek and the saga begins.