Tiny Winged Creature

Born 891 A.D. October 24 not, 1935 October 4, in the Highlands of Scotland to Isobel Rossi and Redmond McGonagall. A hidden history covered up by prestigious awards/positions along with 'lion heart' persona. How honest is this persona? Then over a thousand years later, when it falls in the presence of the smartest witch of the generation, will McGonagall still be able to hide?