I'd like to get in contact with the Riot Employee that invited me to the League of Legend's Beta

A long time ago, my friend and I went to a restaurant and bar with his family, his uncle was a Riot Employee and invited us to the League of Legend's Beta (Or Similar). Sadly, we declined, we where only 8 / 9 year's of age (Year 2008/2009) and had absolutely 0 clue what PC gaming or MOBA's where. I regret not accepting his invitation, for the game had come such a long way to be one of the most successful game's there is and what a great game it is.

I had been playing the Black Market Brawlers Mode and was put into a game with @RiotZwill and asked him how to go about this situation. I told him I would like to congratulate and thank the Riot Employee for inviting me and helping create such a successful and great game. He suggested contacting Riot Player Support and start there but he was also unsure if he was still employed by Riot, I hesitated to send a ticket, for I could not think of which is the correct subject / sub-subject it belonged to.

I would like to get in contact with the Riot Employee that invited me to the League of Legend's Beta (Or Similar) and thank and congratulate him.

-Joe