brain-twister

and brain-teaser

n. a puzzle, especially one that requires thinking. Can you help me with this brain-teaser? I can spend my whole vacation doing brain-twisters.

Name	Pronounced	Usage
Martinus	-	Ancient Roman, Dutch
Fredenand	-	Ancient Germanic
Karl	[ka:l]
Atrides	['ætridəs]
Beileag	-	Scottish
Carlton	['ka:ltən]