Usage of the Younger Futhark is found in Scandinavia and
Viking Age settlements abroad, probably in use from the 9th century onward. During the
Migration Period Elder Futhark had been an actual "secret" known to only a literate elite, with only some 350 surviving inscriptions. Literacy in the Younger Futhark became widespread in Scandinavia, as witnessed by the great number of
Runestones (some 3,000), sometimes inscribed with almost casual notes. During a phase from about 650 to 800, some inscriptions mixed the use of Elder and Younger Futhark runes. Examples of inscriptions considered to be from this period include
DR 248 from Snoldelev,
DR 357 from Stentoften,
DR 358 from Gummarp,
DR 359 from Istaby, and
DR 360 from Björketorp, and objects such as the
Setre Comb (N KJ40).
Ög 136 in Rök, which uses Elder Futhark runes to encrypt part of the text, and
Ög 43 in Ingelstad, which uses a single Elder Futhark rune as an
ideogram, are also sometimes included as transitional inscriptions. By the late 8th century, the reduction from 24 to 16 runes was complete. The main change was that the difference between voiced and unvoiced consonants was no longer expressed in writing. Other changes are the consequence of sound changes that separate
Old Norse from
Proto-Norse and
Common Germanic (mostly changes to the vowel system). • The first
ætt was reduced to its first six letters,
fuþąrk, losing the
g and
w runes (the old
a rune is transliterated as
ą for Old Norse as the phoneme it expressed had become more closed). • The second
ætt lost the
æ and
p runes. The
j rune was rendered superfluous due to Old Norse sound changes, but was kept with the new sound value of
a. The old
z rune was kept (transliterated in the context of Old Norse as
ʀ) but moved to the end of the entire sequence in the only change of letter ordering in Younger Futhark. • The third
ætt was reduced by four runes, losing the
e,
ŋ,
o and
d runes. In tabular form: The Younger Futhark became known in Europe as the "alphabet of the Norsemen", and was studied in the interest of trade and diplomatic contacts, referred to as in
Frankish Fulda (possibly by
Walahfrid Strabo) and "
Ogham of the Scandinavians" in the
Book of Ballymote. ==Rune names==