Gillian

English

Medieval English feminine form of Julian. This spelling has been in use since the 13th century, though it was not declared a distinct name from Julian until the 17th century, meaning "From the Roman name Iulianus, which was derived from Julius. This was the name of the last pagan Roman emperor, Julian the Apostate (4th century). It was also borne by several early saints, including the legendary Saint Julian the Hospitaller. This name has been used in England since the Middle Ages, at which time it was also a feminine name (from Juliana, eventually becoming Gillian)."