Hjarrandi

As defined by the Cleasby & Vigfusson Old Norse to English dictionary:

hjarrandi

a, m. a mythical name, the Demodokus or Orpheus of the old Teut. legends, Edda 89: A. S. Heorrenda; in old Germ. poems called Horant. Hjarranda-ljóð, n. pl. the lay or tune of H., a charmed tune on the harp, FaS. iii. 223 (Bósa S.): a mod. metre in the Ballads (Rímur) is, if we remember right, still in Iceland called Hjarranda-lag, the tune of H. (see Bartsch’s Ed. of Kudrun, pp. i. x, xvii, and the sixth Aventiure of Kudrun, inscribed ‘wie suoze Horant sanc’ = how sweet H. sang).

Possible runic inscription in Younger Futhark:ᚼᛁᛅᚱᚱᛅᚾᛏᛁ
Younger Futhark runes were used from 8th to 12th centuries in Scandinavia and their overseas settlements