Gleó-

According to the Old English Dictionary:

gliw-stæf, es;

gleó-

m. Joy :-- Gliwstafum joyously, Exon. 77 a; Th. 289, 22; Wand. 52. [Cf. other compounds with stæf, e.g. ǽr-, sár-stæf.] gleo-,gleo