The Edge of the Blade — Graham Shelby

  A twelfth century historical adventure about a Crusader knight on a quest to avenge his father and win the hand of the woman he loves.  
 
The Falkan castle of Tremellion is visited by the mysterious Lord Vaulmier, Treasurer of the Crusade, and his beautiful daughter Christiane de Magnat-Vaulmier. Seeking finance for the Third Crusade against Saladin, they negotiate with Sir Geoffrey Falkan and inveigle all the Falkan fortune, to the fury of Sir Geoffrey's older son, Ranulf, who will be driven to the most terrible of crimes . . .

Baynard Falkan, younger son and valiant knight errant, sets out on a quest to find Christiane, who has stolen his heart, and to avenge the bloody killing of his father. But to find justice, he must survive bandits and pirates, and travel to the bloody siege of Jerusalem.

Praise for The Crusader Knights series:
 
“History with a dramatist's eye for a fine setting and a novelist's insight into human minds and motives” -- The Times Literary Supplement
 
“Vivid visual moments and all the technology of medieval warfare.” -- The Observer
 
“Highly enjoyable. . . . Exciting as well as psychologically convincing and thought-provoking.”
  -- Financial Times