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
(..) Ah, Gideon, listen. The merry laughter... of little innocent children wending their way to school. Thirsty little minds rushing to the fountain of knowledge. School, a noble institution. What would this stupid world be without-- Well, well, well! Stromboli! So that old rascal's back in town, eh? (..)1940 Pinocchio