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
(..) a bit foreign to me. It's hard to keep all the rules straight. But if I remember my lessons, a woman of noble birth is always called a lady unless she's a queen or a princess. I could find someone who knows. Why are you so sure I'm of noble birth? Because it's obvious. What if I told you my father sold lace on the long bridge and my mother, my brother, and I lived with him above our shop? (..)2012 TvShow: Game of Thrones Title: The Old Gods and the New Season: 2 Episode 6