The Telmarean Pantheon

Deity	Alignment	Domains	Symbols
DAGDA god of weather, crops, livestock and rivers	CG	Storms, Trickery, and Nature	Bubbling geyser
OGHMA god of medicine, history, and healing	LG	Life, Knowledge	A garden snake curled around a mistletoe branch
SILVANUS god of nature, crossings, and forests	TN	Nature, Time, Magic	Deer with steeloaks for horns
NUADA god of war, warriors, and smiths	LN	War, Conflict, Fire	Silver gauntlet on black background
BRIGID goddess of battle, tactics, and speech	NG	Protection, Children, Fertility	Knotted Cross
MARAMANA goddess of the moon, prophecy, and tides	LN	Divination, Dreams	Silver crescent
ARAWN god of death and the afterlife	LE	Death, Reincarnation, Hells	A dark star on grey
ARAWYN goddess of life and enlightenment	LG	Life, Mysticism	Tree of Life
MORRIGAN goddess of death, discord, and war	LE	War, Magic, Fate	Spear and scepter crossed
LUGH god of fortune, travel, commerce, and luck	TN	Chance, Wealth,	A pair of dice
VENAESIA goddess of knowledge, writing, magic, and charms	CG	Knowledge, Mysteries	3 six-pointed stars on midnight blue
MATH MATHOWNY god of trickery, magic, and necromantia	CE	Trickery, Magic, Secrets	Black staff
BELENUS god of the sun, light, and healing	NG	Light,	Orange sunburst against a yellow-red background
DUNATIS god of mountains, peaks, earthquakes, and smithing	CG	Nature, Earth, Lava	Red sun-capped mountain peaks
MANANNAN MAC LIR god of the oceans and sea creatures	NG	Nature, Temptests	Wave of white water against green

THE DAWNFORGERS	THE ARCANE COURT	THE EXALTED	THE ODIOUSIAN SEEKERS
Dagda Silvanus Arawn Arawyn Belenus Dunatis Maramana Manannan mac Lir	Silvanus Brigid Math Mathowny Venaesia Oghma	Morrigan LUGH	Arawn Math Mathowny Nuada

Note:

The Telmarean Pantheon is based off the simplistic version of the Celtic pantheon used within D&D 5e. You can read more about the Celtic pantheon (and more!) here on D&D Beyond.

It’s said that something wild lurks in the heart of every soul, a space that thrills to the sound of geese calling at night, to the whispering wind through the pines, to the unexpected red of mistletoe on an oak—and it is in this space that the Celtic gods dwell. They sprang from the brook and stream, their might heightened by the strength of the oak and the beauty of the woodlands and open moor. When the first forester dared put a name to the face seen in the bole of a tree or the voice babbling in a brook, these gods forced themselves into being.
The Celtic gods are as often served by druids as by clerics, for they are closely aligned with the forces of nature that druids revere.

— D&D 5e