Hector was the eldest son of
William Munro, 12th Baron of Foulis who died in 1505. Hector was so young when he succeeded to his estates that management of the estates was attended to by his relatives. In 1514/15 after attaining his majority, Hector Munro was appointed Lieutenant along with
John Mackenzie, 9th of Kintail, chief of
Clan Mackenzie, for the protection of Wester Ross. They were to protect the lands from the incursion of Sir Donald MacDonald of Lochalsh, chief of the
Clan MacDonald of Lochalsh, who at that time proclaimed himself
Lord of the Isles. There is a
charter under the
Great Seal of Scotland, dated 10 December 1516 to Hector Munro of Foulis, granting him the
salmon fishing in the
Kyle of Oykel, between the counties of
Ross and
Sutherland upon the resignation of the same subjects in his favour by Sir Donald MacDonald of Lochalsh. Hector Munro also acquired by charter dated at Glengarry 2 October 1524, from Margaret MacDonald of the Isles, sister of Sir Donald MacDonald of Lochalsh, with the consent of her husband Alexander MacDonald, 6th of Glengarry, chief of the
Clan MacDonell of Glengarry, part of the lands of
Lochalsh,
Lochcarron,
Lochbroom, and Feorin-Coscarrie, in Breachatt and superior of the lands of Creichmore and fishings of the Killis Ockell. She further sold and confirmed to her cousin, Hector Munro of Foulis, the half of the lands of
Inveran, Linisetroy, Linisetmore, Altasbeg, Altasmore and Auchness for a certain sum of money delivered to her for her need and urgent necessity. These grants were further confirmed to Hector Munro at Court by king
James V of Scotland by charter dated at
Stirling on 20 April 1541. A charter found at
Cawdor Castle between the Knight of Calder and others dated at
Inverness on 30 April 1527 includes Hector Munro of Foulis as one of the subscribers. There is also a bond of
manrent between Hector Munro and
Hugh Fraser, 5th Lord Lovat dated 19 March 1529. Different sources give different dates of death for Hector Munro. The Martine MS written by
George Martine in the late 17th century gives the date as 1549. However, contemporary records, the Munro Writs of Foulis, give the date as 8 March 1541. Hector died at
Culrain in the parish of
Kincardine and his remains were interred in the ancestral burying ground in the
Chanonry of Ross. ==Family and descendants==