Henk Ronnenbergh became an umpire in 1949 and quickly made it to the Hoofdklasse. He umpired for 22 seasons in the Hoofdklasse. He also was an umpire for the 1969 European Championship, 1971 European Championship and 1973 European Championship. Ronnenbergh's son Martin Ronnenbergh played in the minor leagues and in the Netherlands while his other son Erik Ronnenbergh was a player and coach in the Netherlands. Grandson Scott Ronnenbergh signed with the Seattle Mariners in 2010.