Hi All,
Mac means son of. So could Mac be the son of someone important?
Also;
Now I am not saying that this invalidates any other identities, but in doing some browsing I came across this
https://en.wikipedia.org/wiki/Tuan_mac_CairillOf note, the association with St Patrick and the living multiple lives and seeing the many invasions ties in nicely with his Watcher background. How this all ties in to the Outsiders, I don't know but I suspect there is at least some connection here. It would be very Jim.
ALSO: Tuan mac Cairill is an immortal shapeshifter. His origins trace back to the Antediluvian age, making him possibly the oldest being on the island. He is perhaps one of the legendary
Nephilim. Tuan was once a follower of Partholón, though as the sole survivor of the plague that slew all the Partholóin, he is regarded with great suspicion. Mostly reclusive, he charges himself as
watcher of the lands, having witnessed all the invaders arrive and perish in turn.