http://www.jewishencyclopedia.com/view.jsp...A&search=lailah"A few of these names recur in Enoch, viii. and lxix. The angel of hail is introduced under the obscure name of Yur?emo (Pes. 118a). The angel of night is called
Lailah (Sanh. 16a). The one set over the sea, Sar shel yam (Gen. R. x.), is called Rahab (B. B. 74b, after Job, xxvi. 12). He was slain by God at the Creation, because he refused to swallow the water for the drying of the land; and his body is covered by water lest all creatures should perish from his stench (compare also Pes. 118b). The angel set over the rain is Ridya, ("the Irrigator"); according to Kohut, "Jüd. Angelologie," p. 45, Rediyao (Persian, Areduyao, Ardoi); Ta'anit, 25b; Yoma, 21a (Rashi): "He resembles a calf, and is stationed between the upper and the lower abyss, saying to the one, 'Let your waters run down'; and to the other, 'Let your waters spring up.'" Of the seven names of the earth (Ab. R. N. A, xxxvii.; Pesi?. R. K. 155a) seven angel names were formed: (1) Ar?iel, (2) Admael, (3) ?arabael, (4) Yabbashael, (5) 'Ar?iel (compare 'Ar?as, Slavonic Book of Enoch, xxiv. 2), (6) ?aldiel, and (7) Tebliel. They were stationed in the second heaven (see "Merkabah de-Rabbi Ishmael" in Wertheimer's "Bate Midrashot," i. 22."
http://www.oldcrows.net/~myyah/ANGEL/dico.htmlreferences taken from Gustav Davidson's A Dictionary of Angels."Laila(h) (Lelieil, Lailahel, Layla)
-the name is said to derive from a rabbinic exegesis of the word "lailah" (meaning night) in Job 3:3. In Jewish legendary lore, Lailah is a demonic angel of night, the "prince of conception," to be compared with Lilith, demoness of conception."