Sir is an honorific used to address titled individuals, particularly those of knightly rank or high office. Derived from the Old French 'sire', which was a contraction of 'seignor' meaning 'lord'. It entered the English language in the late 13th century and has since been widely adopted in many cultures and languages worldwide.
The name Sir has experienced significant fluctuations in popularity over the past five decades. The peak years for the name were 2017 to 2021, with a record high of 123 births in 2021. However, there was a notable decline in recent years, with only 83 births recorded in 2023.