old Irish zodiac was obviously heavily influenced by Greco-Latin
ideals, and translated straight into Irish, although it is
interesting that Leo is called 'Cú', The Hound, and not Leon,
the Lion. There is some evidence to suggest constellation
groupings like the were perceived in ancient Ireland. Other
constellations which were recognised as groupings include Orion
(which was known in various forms, most notably Nuadu of the
Silver Hand) and Cassiopeia and the Northern Crown. Cygnus, The
Swan, was probably recognised as a constellation too. The Milky
Way was known as 'The Way of the White Cow, and has led Mythical
Ireland to believe the ancient 'river goddess' Boann
(illuminated cow) was in fact meant to be the Moon, and that
Newgrange, which is known in Irish as Brú na Bóinne, is not just
a construct designed to capture Winter Solstice sunrise, but
also Full Moon rise at certain times of the lunar cycle. Brú na
Bóinne could mean 'womb of the moon'. Irish Astrology - An
Historical Argument: Interesting articl