Hoarfrost Umber

Hoarfrost Umber ruled Last Hearth as Lord of House Umber during the reign of Aegon V Targaryen. He had three sons: the eldest inherited the lordship, while the two younger were Mors and Hother.

The eldest son himself had several children of his own. The first of them, Great Jon Umber, would go on to lead the house in his turn.

Lord Hoarfrost believed his youngest son, Hother, had the makings of a maester, so around 250 AC he sent him to train at the Citadel in Oldtown.

There a prostitute tried to rob him, and Hother gutted her, an episode that earned him the nickname Whoresbane.

The story is told in whispers over a detail rarely spoken aloud: the prostitute was in fact a man.