Patrick the Celt

Patrick the Celt is a character who appears in the Singer random encounter in 2161.

Background
He can be considered a fellow adventurer, as he mentions helping Junktown with their lights and Shady Sands with their wells, similar to what the Vault Dweller does. He's the descendant of an Americanized Celtic family with a strong desire to keep his "ethnic heritage" alive. To this end, he collects clothing, food, stories, songs, and histories as he travels the wastes. He knows the Celtic song Na Gheala Mbeadh. Patrick is determined to preserve his history.

Other interactions

 * If the Vault Dweller asks Patrick if they know the song "Na Gheala Mbeadh," he will sing it, adding 1 point to the player character's Charisma through dialogue options. This only happens the first time one talks to him, which requires a Speech check. One can try multiple times by cycling through the dialogue. It requires an Intelligence of 7 or higher to unlock the dialogue option.
 * He can also tell the player character some information about different towns in the wasteland.
 * If the player character finds this encounter at night, there will be a beer bottle on the ground close to the fire. Using the Steal skill on the bottle will allow access to Patrick's inventory.

Appearances
Patrick appears only in Fallout.

Behind the scenes
"Seems kinda out of place, doesn't he? He's the descendant of an Americanized Celtic family who has a strong vibe to keep his "ethnic heritage" alive. To do so he maintains lineages of Celtic music, food, clothing -- you name it. Never mind that who knows if England still exists at all... among other things, he's a storyteller and a collector of history. While telling tales of the rest of the world was really outside the scope of the game (and it would've been really boring for the player to wade through pages of history-through-a-Celtic-lens), his expertise meant that he could rub off a little on the character in matters of jokes, tale-telling and singing -- the sorts of things that help with Charisma."

- Jesse Heinig, Fallout Bible 9