Celtic deities of olde:
 

Aine – Goddess of the Hidden paths in the realms of the Western ocean.

ANDARTE- Mother goddess worshipped by the Voconti in Gaul. Known as Dea Augusta Andarta, possibly equated with Magna Mater. The name denotes ruler ship.

ANDRASTE- Celtic goddess of Victory, worshipped during Boudicca rebellion.

Angus (Angus Mac Oc) – His name means "son of the young"; A Gaelic Eros known for his physical beauty and golden hair; his kisses become birds.

Aonghus – God of Youth Banbha, Fodhla.

APOLLO GRANNUS- Even more popular Healing and Sun god, consort of Sirona, and mentioned by the historian Cassius Dio.

APOLLO MORITASGUS- Popular healing god, Consort of Damona.

ARTIO- Celtic goddess of forest animals, plenty, hunting, and fertility. Possible connection with the Greek Artemis? Probably linked with Diana.

AVETA- Celtic mother goddess of nursing, fruit, plenty & prosperity.

Badb – The fury; Macha, the battle goddess who collects the heads of her victims for her "acorn crop."

Boann – The Dadga's wife; an Eve figure; The Boyne River is named for her; she and the Dagda have many famous children including Bridgit, Angus, Mider, Ogma, and Bodb the Red.

Bodb the Red – He succeeds his father as king of the gods.

BORMO- Healing god of bubbling springs, also associated with plenty. Associated with Apollo, and pictured holding a goblet, purse and plate of fruit. Known from Spain, France, and Gaul.

BREGANS- Celtic god who was the consort of the goddess Brigantia.

BRIGANTIA- Goddess of victory known from inscriptions in Britain. Thought to be the patron deity of the Brigantes tribe. Sometimes equated with the goddess Victoria. Portrayed with a mural crown, wings, spear and Aegis shield, usually associated with Minerva. Her consort was the god Bregans.

Brigit – Goddess of the hearth, fire and poetry; best loved of all deities; Candlemas is held in her honor; she is the only goddess to survive into the Christian pantheon of saints.

CAMULOS- Celtic war god known in both Britain and Gaul. Known to be important in pre-Roman times, and equated with Mars as Mars Camulos.

CERNUNNOS- Celtic god of fertility, abundance, regeneration and wild animals. Worshipped widely in Roman times, but also known from Pre-Roman sites. Cernunnos means "horned one." The distribution of images show that Cernunnos was widely worshipped in both Gaul and Britain.

COCIDIUS- Celtic god who was primarily worshipped in Northern and Western Cumbria, and in the Hadrian's Wall region. A god of woodland and hunting, also a god of war sometimes depicted with a shield and spear. At Ebchester there was an inscription to Cocidius Vernostonus, (a Celtic god whose name means "alder tree"). Cocidius was sometimes equated with the Roman god Silvanus, and at other times with Mars. A Fanum Cocidi (sanctuary of Cocidius) is mentioned in in the Ravenna Cosmography; it was probably somewhere near the valley of the Irthing River, near Hadrian's Wall.

COVENTINA - Celtic goddess of a spring at Carrawburgh, near Hadrian's Wall. Although the spring had no medicinal properties, Coventina may have been regarded as a healer and water goddess. She apparently had high status, and is referred to in inscriptions as "Augusta" and "Sancta." Coventina is usually portrayed as a water nymph, naked and reclining on lapping waves. She holds a water lily, and in one depiction is shown in triplicate pouring water from a beaker.

Dagha – The All Father:  Many Talented and Powerful, Master of the harp and possessor of a dread double ended club.

Danu The Red Mother of All – Major Mother Goddess of Ireland, Mother of the Gods and Patroness of wizards, rivers, water, wells, prosperity and plenty, Magic and Wisdom. Danu is one of a Triad of War goddesses know collectively as the MorrighanBadbGoddess of WarMachaMacha the Crow. The Third of the Triad of War goddesses known as the Morrighan, Macha feeds on the heads of Slain Enemies.
 

DEA NUTRIX - A particular form of Celtic mother goddess, usually depicted sitting in a high-backed wicker chair suckling one or two children. Pipeclay statuettes in this form have been found throughout all ancient Celtic areas. Finds of these statues in graves suggest that Dea Nurix was also a goddess of renewal and rebirth. Pipeclay figurines resembling the classical Venus are also probably connected with a Celtic-Roman domestic fertility cult.

Diancecht – God of medicine; he once saved Ireland; married to Morrigan; among their children are Etan, who marries Ogma, and Cian, who marries Ethniu, daughter of Balor, the Fomor.

Eriu – The Goddess of Sovereignty.

EPONA - Celtic horse goddess, whose name is derived from the Celtic word for horse. Her worship was spread throughout Gaul and Britain. Epona was a popular goddess in Rome, and even had a Roman festival day, December 18. This is unique for a Gaulish deity. Epona was always portrayed on or with horses, and sometimes with paterae full of corn, ears of corn, baskets of fruit, a dog, and a key. Apart from her association with horses, the symbolism suggests that Epona was also associated with water, and presided over such aspects of life as fertility, healing, death and rebirth.

ESUS - A Celtic god who is known from the writings of the first-century Roman poet Lucan. Eusus is also known from inscriptions in Paris, France, and Trier, Germany. The god had a particular connection with willow trees and is depicted as a woodsman cutting or pruning trees. In later written commentaries from the ninth century, Esus was compared to both Mars and Mercury.

Fea – The war Goddess:  the hateful; Nemon, the venomous

Goibniu – The forger of weapons; the Gaelic Hephaestus; he possesses a potion that enables those who drink it to become invisible; he also is called the "divine architect."

Ler – The gaelic Poseidon; married to Aebh, Bodb's daughter, with whom he has four children after she dies he marries Aeife, who out of jealousy turns the children into swans.

LughIs – A Sun God and a Hero God, Young , strong and Radiant with hair of gold. Master of all arts, skills and crafts.

Lugh – Son of Cian and Ethniu called the "long-handed" or "far-shooter"; Sun god par excellence; he possesses a magic spear and magic hound; The Milky Way is called "Lugh's Chain"; he is the "master of all art," an accomplished carpenter, smith, warrior, harpist, poet, physician, cup-bearer, and bronze-worker.

Manannan –  Ler's son; "God of the headlands"; patron of sailors and merchants; his famed possessions include the yellow shaft, the red javelin, the boat, the wave-sweeper, a horse called Splendid Mane, and three swords named retaliator, great fury, and little fury; he has the gift of in exhaustible life. 

Mannan Mac LyrChief – Irish God of the Sea.

MedbMedb the Drunken Woman – A Goddess of War.

Mider – God of the underworld; his abode is Falga, the Isle of Man; Etain (Ogma's daughter) became his wife, but she was taken away by Angus.

Morrigan (Morrigu) – The great goddess in her Virago aspect;  as chief deity of battle, she likes to take the form of the  hoodie or carrion crow; her name derives from Mor Righ Anu,  meaning "the great queen."

Nuada –  The gaelic Zeus; called "he of silver hand"; killed by the Fomor, Balor early in history of the gods.

Ogma – The Sun Faced One: The God of Wisdom, Eloquence and Language.