Llane Wrynn I

From wow.incgamers.com

Son of King Llane Wrynn I was the ruler of the Kingdom of Stormwind (previously known as Azeroth) during the First War. He was the son of Adamant Wrynn III and his wife Lady Varia. He is the father of Varian Wrynn and the grandfather of King Anduin Wrynn. Born in the human year 564. Sent to Northshire Abbey with his mother when the Orcs invaded Stormwind Keep just after the Dark Portal was created.

At 20 years old was made King of Azeroth. Ten years later, Aegwyn pleaded with him to destroy her son, Medivh as she believed he was corrupted with demonic powers. He sent a warband including Anduin Lothar to Medivh's Tower cutting him down.

Prince Llane was assassinated by the Half-Orc Garona who then took his severed heart to Gul'dan.