Growing Up With Giants

Nursed by a giantess, Hadding grows quickly and becomes strong. He lives well with the giant family who hunt, fish, keep cows, grow grain, gather nuts, berries and wild honey and brew ale and mead. He is at home in the wilds, learns some of the Old Tongue from Jotunheim and shares their feasts which celebrate:

the shaping and slaying of Ymir;
the binding of Garm and Fenris;
Utgard-Loki's tricks on Thor.

These stories are in the Norse myths but not celebrated by any human feasts.

Once, alone on a winter night, Hadding sees light elves, their horses bounding from horizon to horizon in a few heartbeats, and hears their horn:

"The horns of Elfland faintly blowing!" (see here)

He watches the giantess consulting a drow, which says that Hadding is not what he seems. Kraki visits and teaches Hadding about gods and weapons, how to fight and his place in Denmark. This is perfect preparation for Hadding's destiny and is also a hero myth. See also here.