At the end of Lost Glory, Halfdan will ask Eivor how his brother, Ivarr, died. Here you’ll have two dialogue choices. Ultimately it doesn’t matter which you choose, since Halfdan will still commit to an alliance.
“Ivarr died a warrior.”
If you gave Ivarr his axe as he was dying, you should choose this option and tell Halfdan that his brother died a warrior.
“Your brother died a coward.”
If you denied Ivarr his axe, you should choose this option and tell Halfdan that his brother died a coward.