Calais, a name of French origin, is derived from the ancient Celtic word 'cal', meaning 'strong'. It was originally used as a surname before evolving into a given name. The name gained prominence due to its association with the city of Calais in France, which played a significant role during the Hundred Years' War between England and France.
"Calais experienced a fluctuating birth rate over the past seven years, with numbers ranging from a low of 7 in 2017 to a high of 15 in 2019. The total number of births during this period was 72."