Gruelle
Gruelle refers to a surname of Germanic origin. It is believed to derive from the Old High German word "gruon," meaning "green." This suggests a possible connection to places characterized by greenery, such as a meadow or forest, or perhaps a nickname related to a green attribute. The surname has been documented in various European countries, with notable occurrences in Germany and France.
Over time, the spelling and pronunciation of Gruelle may have varied across different regions and through generations.