Royer is a surname of French origin, derived from the Occitan word "roire," which means "to roar." It was originally given as a nickname to someone who had a loud voice or was considered boisterous. The name first appeared in France during the Middle Ages and has since spread to other parts of Europe and beyond. In some cases, Royer may also be an Americanized form of the Jewish surname Roizen. Today, it is found predominantly among French-speaking populations but can be encountered worldwide.
"The name Royer experienced a significant surge in popularity between 1992 and 2003, with over 100 births each year during this period. However, it's notable that there was a considerable drop off after 2004, with fewer than 15 births annually until 2021 when the numbers began to rise again."