XFC MMA on Twitter: "#XFC44 Results - @DamonteMMA def. Tom O'Connor by unanimous decision (29-28 x 3), advances to Final of #XFCMMA Lightweight Tournament WATCH ➡️ https://t.co/CMrn6TaoAv https://t.co/SaVcg9Ff5V" / Twitter
Who was Tom O'Connor and what was his cause of death?