be well up on

be well up on something

to have a good knowledge of a subject I'm not very well up on Ancient Greek history.

Name	Pronounced	Usage
Erma	['ɜ:mə]
Donatianus	-	Late Roman
Hodiah	-	Biblical
Rossana	-	Italian
Eos	e-aws (Ancient Greek), EE-aws (English)	Greek Mythology
GaÉTan	-	French