Gods of Gaul:
Abnoba
Goddess of the hunt, similar to the Roman Diana
Andraste
Goddess of victory
Belenus
God of light; his name means "shining one"
Borvo
God of healing; his name is associated with springs
Cernunnos
God of fertility and animals; referred to as the "horned one"
Damona
Goddess of fertility and healing; her name translates as "divine cow"
Dispater
Roman god of the underworld; his cult thrived in Gaul also
Epona
Goddess of horses
Esus
God equated with the Roman deities Mars and Mercury
Nantosuelta
Goddess of nature; the wife of Sucellus
Nehalennia
Goddess of the sea
Ogmios
Gods of eloquence and knowledge; equated with the Roman hero Hercules
Rosmerta
Goddess who was the native consort of the Roman god Mercury; her name signifies "great provider"
Sirona
Goddess of healing
Sucellus
God of agriculture and forests; also a hammer god (his name means "good striker")
Taranis
God whose name means "thunderer"; compared to the god Jupiter
Teutates
God of war; roughly equivalent to the Roman god Mars
Gods of Britain:
Belatucadrus
God whose name means "fair shining one"
Cocidius
God associated either with forests and hunting (linked with the Roman god Silvanus), or war (equated with Mars)
Condatis
God who personified the joining of two bodies of water in the Tyne-Tees area of North Britain; also conflated with the Roman god Mars
Coventina
Goddess who personified a holy spring (that was reputed to have healing powers)
Cuda
Mother goddess
Latis
Goddess associated with water (and possibly beer as well)
Matres Domesticae
An aspect of the three mothers, who were considered goddesses of the homeland (Britain)
Mogons
God who was worshipped mainly in North Britain; his name means "great one"
Nodens
God of healing; he is related to the Irish god Nuada
Sulis
Goddess of healing, she presided over hot springs in Aquae Sulis (modern Bath); often conflated with the Roman goddess Minerva
Gods of Ireland:
Aine
Goddess of love
Banbha
One of the trio of goddesses who lent their name to Ireland
Boann
Goddess of water and fertility; bore Oenghus to the Daghda
Brigit (Brighid)
Goddess of fertility, healing, and poetry
Cian
The father of Lugh
Cliodna
Goddess of beauty and the otherworld
Creidhne
God of metalworking; one of the trio of craft-gods of the Tuatha De Danaan
Daghda
God of the earth; leader of the Tuatha De Danaan
Danu
Goddess who is a version of the Great Mother; mother of the Tuatha De Danaan
Dian Cecht
God of crafts and healing
Donn
God of the dead; the "dark one"
Eriu
Another of the three goddesses after which Ireland was named
Fodla
Third of the trinity of goddesses of Ireland
Goibhniu
God of the smith; one of three craft-gods of the Tuatha De Danaan
Luchta
God of wrights; one of the triad of craft-gods of the Tuatha De Danaan
Lugh
God whose name means "shining one"
Macha
Goddess of war and fertility; called "Macha the crow"
Morrigan
Godesses of war and death; had a triple aspect; wife of the Daghda
Nechtan
Water-god whose sacred well was a source of knowledge
Néit
God of war; husband of Nemhain
Nemhain
Goddess of war and battle
Nuada
One of the kings of the Tuatha De Danaan
Oenghus
God of youth and love
Ogma
God of eloquence and language
Tuatha De Danaan
The Irish race of gods who descended from the goddess Danu; patrons of magic and arts
Gods of Wales:
Arianrhod
Goddess whose name means "silver wheel" (i.e., the moon)
Blodeuwedd
A maiden of flowers created to be the wife of Lleu Llaw Gyffes
Branwen
The daughter of Llyr
Dewi
God who was represented by the Red Dragon, which has become the emblem of Wales
Don
Mother goddess; the Welsh equivalent of the Irish Danu
Govannon
God of smiths & metalworkers
Gwynn ap Nudd
God of the Underworld
Lleu Llaw Gyffes
God who is the Welsh equivalent of the Irish Lugh
Llyr
God of the sea
Math ap Mathonwy
God of sorcery
Modron
Goddes whose name means "divine mother"