It was 'noble' of her to come forward with this information.
She married a man of 'noble' [='aristocratic'] birth/rank.
a 'noble' ideal/ambition/cause/purpose
(..) on the black man's soul ♪ ♪ Just like the way most history's told ♪ ♪ Broken spirit, broken face ♪ ♪ Slavery dropped down on a noble race ♪ ♪ African warrior wipin' the boots ♪ ♪ Of a white slave master who stole his roots ♪ ♪ Don't let him read, don't let him write ♪ (..)1994 The Glass Shield