One of the mysteries of the English language finally explained.
Definition of All-Father in English:
All-Father
noun
1(A title of) Odin (Woden), the supreme god and creator in Scandinavian mythology.
2Applied to God. Compare "father". Now somewhat archaic.
3(A title of) the ancient Greek god Zeus (Jupiter in Roman mythology).
Origin
Late 18th century; earliest use found in Frank Sayers (1763–1817), poet and scholar. From all + father, after Old Icelandic al-fǫðr, epithet of Odin, later also used of the Christian God.