Namesakes
Nobel Prize Winners:
1 physics
(physics) Charles Thomson Rees Wilson 1927 
Notable Athletes:
1 rugby
(rugby) Carwyn James (a.k.a. Rees) 1929-1983
Notable Scientists and Inventors:
1 physicist
Charles Thomson Rees Wilson 1869-1959
Olympic Medalists:
1 bronze
(bronze) Marjorie Clark (a.k.a. Rees) 1932 80 m hurdles