YGDRASIL, great ash-tree, supposed by Norse mythology to support the universe
YMIR, giant, slain by Odin
YNYWL, Earl, host of Geraint, father of Enid
YORK, Britain
YSERONE, niece of Arthur, mother of Caradoc
YSPA DA DEN PEN'KAWR, father of Olwen
Z
ZENDAVESTA, Persian sacred Scriptures
ZEPHYRUS, god of the South wind,
ZERBINO, a knight, son of the king of Scotland
ZETES, winged warrior, companion of Theseus
ZETHUS, son of Jupiter and Antiope, brother of Amphion. See Dirce
ZEUS, See JUPITER
ZOROASTER, founder of the Persian religion, which was dominant in Western Asia from about 550 BC to about 650 AD, and is still held by many thousands in Persia and in India