Ilio Matos was a resident of Montreal, Quebec.

Ilio was a referee in the National Soccer League in the 1970’s.

Ilio was on FIFA’s list of referees from 1974 to 1984.

He was the referee of the 1976 Olympic qualifying game between Guatemala and Mexico.

He was the referee of the World Cup qualifying game between Costa Rica and Guatemala on November 26, 1980.