- Notes
Fonsy Grethen (born 20 September 1960 in Luxembourg City) is a Luxembourgian[1] carom billiards player. During his career, he won four world titles and thirteen European titles. Notes1. ^munzinger.de
{{Luxembourgish Sportspeople of the Year}}{{DEFAULTSORT:Grethen, Fonsy}}{{Luxembourg-sport-bio-stub}} 5 : Luxembourgian carom billiards players|1960 births|Living people|Sportspeople from Luxembourg City|World champions in carom billiards |