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
(..) The Lineages and Histories of the Great Houses of the Seven Kingdoms, with descriptions of many high lords and noble ladies and their children. Harkon Umber, first of his name, born to Lord Hother Umber and Lady Amaryllis Umber (..)2011 TvShow: Game of Thrones Title: Cripples, Bastards, and Broken Things Season: 1 Episode 4