|Also known as:||Sweet William|
|Appearances:||Sharpe's Enemy, Honour, Mission, Siege, Revenge|
William Frederickson, nicknamed 'Sweet William' by his men, is a captain of the 60th Royal American Rifles, a regiment raised in the former colony, and trained as sharpshooters. After the loss of America, the composition altered to include about half its members being German.
At some point, Frederickson suffered serious facial wounds which destroyed his left eye, tore away most of his right ear, and knocked out several teeth. When fighting he takes out his false teeth, and removes his wig and eye patch, to terrifying effect. He is, however, a cultured and sensitive man, with an informed knowledge of European architecture.
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's who considers him one of his best friends.In Sharpe's Siege, he and his company accompany Sharpe and the Royal 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 becomes 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 demands to know how many women Sharpe needs. Hurt and angry, William walks away, and the two men apparently never spoke again.
In Waterloo it is stated that William had been posted to Canada.
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.