In Irish it's feall / brath
Aiden is a pet form of the name of a Celtic sun god Aodh meaning "fire".
In Irish it's "croí" In Welsh it's "calon" In Scots Gaelic it's "cridhe"
There's actually no such language as "Celtic". Celtic refers to a group of dozens of languages, six of which are spoken today:BretonCornishIrish GaelicManxScottish GaelicWelsh
Celtic style lettering is taken from the handwriting script used by Celtic monks when copying scriptures in medieval monasteries.
the Great Fire Festival at Samhain in Celtic Ireland
In Irish it's "tine bheag"
It is pronounced as "hay", he was a Celtic god meaning flame or fire.
Beltane
In Irish it's "fiáin"
In Irish it's feall / brath
The Celtic word for seven varies among the different Celtic languages. In Irish, it is "seacht," in Scottish Gaelic, it is also "seachd," and in Welsh, it is "saith." Each of these words reflects the linguistic diversity within the Celtic language family.
In Irish it's: tine (small fire) / dóiteán (blaze) In Welsh it's "tân" In Scots Gaelic it's "teine"
Immediately prior to playing for Celtic in 2011, Fredrik Ljungberg had played for American Major League Soccer team Chicago Fire.
I don't know if 'Green man' actually is used in Celtic languages. The wikipedia article mentions an ancient Celtic god called Viridios which may derive from 'green'.
'without an end' or 'by ourselves'
There's actually no such language as "Celtic". Celtic refers to a group of dozens of languages, six of which are spoken today:BretonCornishIrish GaelicManxScottish GaelicWelsh