Echoing Jonquil's comment: 'Possibly derived from Welsh el- "greatly, much" and geri "bitter." This was the name of a river in Ceredigion and a 5th-century saint, the grandmother of Saint David.'Apparently, there are two related Welsh feminine names: Meleri, derived from Welsh my "my" and Eleri; and Teleri, from Welsh ty "your" and Eleri. 'Teleri verch Peul was one of the maidens of King Arthur's court mentioned in Kulhwch and Olwen.'Source: http://www.amethyst-night.com/names/welshfem.html
― Anonymous User 3/7/2011
4
This beautiful lilting name is also that of a Welsh river. In their "The Brilliant Book of Baby Names" Satran and Rosenkrantz give the meaning as "greatly bitter".