I am pretty sure Monarchs were made in Canada from 1948 to 1961. When I was a kid, my Dad had a 1950 Monarch. This was a cheaper version of the Mercury, sold at Ford dealers. The Meteor started out as a more expensive Ford, sold at Mercury dealers, and ended up as the low line of Mercury. The Meteor nameplate started in 1949, and lasted until about 1966. My mother had a few Meteors over the years; 1951, 1956, 1959, and 1963. The last Ford-based Meteors were built in 1961. 1962 and 1963 Meteors were intermediates, based on the Fairlane. In 1965, the Comet grew a little larger and replaced the Meteor as Mercury's intermediate. In 1965 and 1966 the Meteor name was applied to the entry-level full-size Mercury.
In Canada, there were often Ford dealers and Mercury dealers in the same town, competing with each other, offering a full range of models. Ford dealers had Ford cars and trucks, Falcons, Thunderbirds, and Monarchs. Mercury dealers sold Mercury cars and trucks, Frontenac (1960 only), Meteor, and Lincoln. In 1961, the new Comet replaced the unloved Frontenac.