Carlyon is a name of Cornish origin, derived from an ancient Cornish place name Kerlyon, which means "fortified hill" in Cornish. This name has a long history in Cornwall and was once used as a surname before being adopted as a given name. The use of Carlyon as a first name gained popularity in the mid-20th century, particularly in English-speaking countries. It is often associated with individuals from Cornwall or those who have an interest in Cornish culture and history.
These statistics show a fluctuating pattern of births named Carlyon from 1930 to 1973. The number of births peaked in the years following World War II, with a high of 26 in 1946 and an average of around 20-25 births per year between 1941 and 1950. After 1950, the number of Carlyon births decreased steadily, dropping to single digits by the late 1960s. Overall, there were a total of 513 babies named Carlyon during this period.