Upon his father's death Hugh succeeded as chief of the clan and he was granted from his cousin, Uilleam III, Earl of Ross, charters for the lands of Katewell and the Tower of Badgarvie in the parish of Kiltearn.
[2] In 1379 Euphemia I, Countess of Ross confirmed the lands of Contullich and the Tower of Ardoch (Contullich Castle) to her cousin Hugh Munro of Foulis and in 1394 she granted Hugh two charters, one in respect of the "Tower of Strathschech" and "Wesstir Fowlys".
This resulted in the Battle of Harlaw where the Munros fought in the Lord of the Isles 'host' of 10,000 man against a lesser army of armed knights led by the Earl of Mar, agent for the Duke of Albany, who wanted Ross for his son.
[2] In the years following his death, during the chiefship of his eldest son George Munro, King James I of Scotland returned from captivity in England and took strong measures to restore order in the Highlands.
He came to Inverness in 1427 and seized Mariota, Countess of Ross and her son, Alexander of Islay, Lord of the Isles, as well as many other prominent Highlanders who were punished in various ways.