Blood on the Thorn — Tony Masero

Robert Rose, is a young Texan who one day loses the past he knew except for the one discovered in the weathered pages of his mother's journal. Taken captive in a devastating raid on his hometown he is raised as kin to a ruthless killer who teaches him the way of the gun. Known as Kid Cabrero, Robert runs with the outlaw gang and learns fast, he is soon feared and respected along the Border country and earns a rep as a deadly hand with a six-gun.
Then he meets his patron's estranged daughter and everything changes.
It seems like this woman can fill the emptiness born from his lost origins. But his search for his roots are not over yet and deep heartache and danger lay across his path before he can come to the truth, even though the inheritance he finds is written in the dark shades of blood and bullets.