for him/his seeing me off?

English as a Second Language English Vocabulary, Grammar and Idioms
1

I wrote a thank-you letter to Ted for him/his seeing me off.

  1. Does the sentence make sence?
  2. if it does which word is more accurate-him or his?
    Thanks ~~
2

I wrote a thank-you letter to Ted for seeing me off sounds better. Otherwise, I’d say ‘for his seeing me off’.