clap·per 
(klăpər)
(klăpər)n.
1. One who applauds.
2. The tongue of a bell.
3. Slang The tongue of a garrulous person.
4. clappers Two flat pieces of wood held between the fingers and struck together rhythmically.
- William John Clifton, Jr.
- William Joseph
- William Joseph, Jr.
- William, Jr.
- William Julius
- William Lawrence
- William Lee
- William Lloyd
- (William Lyon) Mackenzie
- William Magear
- William Makepeace
- (William Matthew) Flinders
- William Maxwell Aitken.
- William Motter
- William of
- William of
- William of Malmesbury
- "William of Orange."
- William of Orange
- William Orville
- William Penn Adair
- William Randolph
- "William Rufus."
- Williams
- Williams