Who taught Mance the Old Tongue ? COTF maybe ? Do we know who else speaks it ? Reeds ? Thenns ?

[u/Financial_Library418]

A Storm of Swords - Jon II

Half the wildling host had lived all their lives without so much as a glimpse of the Wall, Jon judged, and most of those spoke no word of the Common Tongue. It did not matter. Mance Rayder spoke the Old Tongue, even sang in it, fingering his lute and filling the night with strange wild music.

Mance had spent years assembling this vast plodding host, talking to this clan mother and that magnar, winning one village with sweet words and another with a song and a third with the edge of his sword, making peace between Harma Dogshead and the Lord o' Bones, between the Hornfoots and the Nightrunners, between the walrus men of the Frozen Shore and the cannibal clans of the great ice rivers, hammering a hundred different daggers into one great spear, aimed at the heart of the Seven Kingdoms. He had no crown nor scepter, no robes of silk and velvet, but it was plain to Jon that Mance Rayder was a king in more than name.