I'm hanged if I know!

I have absolutely no idea! I'm hanged if I know how to fill out these tax forms!

Name	Pronounced	Usage
Severinus	-	Ancient Roman
Hinnerk	-	Low German
Aldwin	-	Ancient Germanic
Margaid	-	Manx
Marvel	['ma:vəl]
Ganizani	gah-nee-ZAH-nee	Southern African, Chewa