Hár-wenge

According to the Old English Dictionary:

hár-wenge

adj. Hoary, grey-haired :-- Hé wearþ fǽrlíce geþuht cnapa and eft hárwenge he suddenly appeared a youth, and again grey-haired, Homl. Th. i. 376, 13. Hé hæfþ síde beardas hwón hárwencge he has a good deal of hair on his face, rather grey, 456, 18. har-wenge