|Also known as:||Sweet William|
|Appearances:||Sharpe's Enemy, Honour|
Introduced in Sharpe's Enemy, he is of German and English descent and speaks both languages fluently, as well French and passable Italian. He is described as lithe as a whip and hard as brass.
In Sharpe's Honour, he is one of only half a dozen people who know of the deception regarding Sharpe's court-martial. He escorts Hogan and Angel to the Gateway of God to meet Sharpe after looter Liam Dooley was hanged in his place.
He is a close and loyal ally of Sharpe who considers him one of his best friends. In Sharpe's Siege, he accompanies Sharpe and the Marines to Teste de Buch, where Sharpe trusts him completely to fight as needed. In Sharpe's Revenge, after Sharpe and Harper became detached from the South Essex, he snapped up the services of RSM Harper for the 60th when Sharpe went to Nairn's staff. He was accused along with Sharpe in the theft of the French treasury, and fought with Sharpe to clear their names.
He became enamored of Lucille Castineau, during their campaign, who kindly but firmly rejects Frederickson's proposal of marriage. She later takes Sharpe as a lover. When Frederickson finally is told by Sharpe what had happened between him and Lucille, he painfully demanded to know how many women Sharpe needed. Hurt and angry, William walks away, and the two men apparently never spoke again. In Waterloo it's stated that Sweet William had been posted to Canada to serve during the War of 1812.
In the Sharpe television adaptation of Sharpe's Revenge, Frederickson, learns of Sharpe and Lucille far sooner, and still fights with Sharpe in Italy where Sharpe saves his life. Instead of walking out on Sharpe, he seems to come to terms with the situation, and tells Sharpe he'll become a lawyer for rich widows in future.