You might find this site helpful to keep track of canon characters: http://familytrees.genopro.com/harry-potter/

I recommend EY to visit it too if possible, since he hasn't read the last few books, this might bring him to date with new developments.

The "I learned" is redundant, unless you mean that you learned that you just learned what TIL means, in which case you could have prefaced it with a 'that'.

I kid, I kid.