The Right Hand Man — K.M. Peyton

It's 1818, and reckless Ned Rowlands is the fastest stagecoach driver for miles around. Ned attracts the attention of the young Lord Ironminster - determined to win a racing wager against his wealthy cousins, the Savilles, and desperate for Ned's help.

Ned is quickly drawn into a strange partnership with Ironminster; as his new friend's right hand man, Ned has an important role to play in helping him outwit the Savilles and preventing his title and estate from passing to them.