One of the prizes I got for winning third place in lindowyn-stock (https://www.deviantart.com/lindowyn-stock)'s irish deities contest, was this poem on Mannanan macLir, written by Faoiltiarna-Wolf (https://www.deviantart.com/faoiltiarna-wolf)
It's a very beautiful poem and I thought I'd post it here for all of you to read.
Flaming helm upon Your head,
Fragarach, the Retaliator, in Your hand.
Brave young warrior,
Wise old magician.
Both are one.
Mannannan MacLir,
Son of Lir,
Numbered among the Tuatha De Dannan.
God of Waves and Mists,
Defender of the Celts,
Guardian of the Blessed Isles.
Ruler of Mag Mell, The Plain of Joy.
Accept my humble offering, my rent.
I bring before you,
bundles of meadow grass, re