The pronunciation of Lleucu is 'hlay-kee'. It originates from Welsh background. The meaning of Lleucu is 'dear light'. It is a form of the English name Lucy. It also has roots in the Latin name Lucius meaning 'light, shine or bright'. Lucius is, in turn, a form of Greek name Leukos. Lleucu also translates to 'light that is cherished'. The usage of Lleucu dates back to the 14th-century poem written by Llywelyn Goch ap Meurig for Lleucu Llwyd. It was named ‘Marwnad Lleucu Llwyd'. The only person to win two prizes for prose in one year is the Welsh author, Lleucu Roberts.