Hell hath no fury : a John Hawk western / Charles G. West.

Enhanced descriptions from Syndetics:

In the first of a trailblazing new series, acclaimed western author Charles G. West introduces the legend of a man called Hawk ...To make a new life, James Pratt and his young bride join a westward wagon train bound for the Rocky Mountains. They get as far as Helena when their unscrupulous wagon master deserts them, leaving them as good as dead in a godforsaken, blood-scorched land. Even still, the other settlers agree to set stakes where they are, but James and his bride press on toward the Bitterroot Valley, deep into Sioux territory.They never come out the other side.James's brother Monroe enlists the legendary Indian scout John Hawk to find them. A hardened veteran of the range, Hawk is living off the land in a little cabin on the Boulder River when Monroe comes begging for his help. To rescue James and his bride, Hawk - and his guns - will come out of retirement, riding fast and fierce into deadly odds. For any other man it's a suicide mission - for Hawk, delivering justice is what he was born to do .