Surely, an uncommon given name of English origin, is derived from the Middle English word 'sure', which means 'certain' or 'undoubtedly'. It was initially used as an adverb, but over time, it evolved into a personal name, particularly for females. The name has a unique and distinctive sound, setting it apart from more common names. However, its usage is not widespread, contributing to its uncommon and intriguing appeal.
Surely, with only 5 births each year for two consecutive years, it's surprising that the name "Annual" did not become more popular.