The name Clem is of French origin, derived from the Latin word 'Clément', which means 'merciful' or 'mild'. It was traditionally a boy's name but has also been used for girls in recent times. In English-speaking countries, it's often associated with the nickname 'Clemency', reflecting its original meaning. Clem is celebrated on November 23rd, the feast day of Saint Clement I, pope and martyr.
"Clem was a popular name for newborns between 1889 and 1926, with the years 1890 and 1917 seeing slightly higher numbers of babies named Clem compared to other years."