Robert Munro , 18th Baron of Foulis Colonel Robert Munro of Foulis ( died April 1633 ) , also known as the Black Baron , was traditionally the 18th Baron of Foulis in Scotland . He was a soldier of fortune , who served in Germany under the banners of Gustavus Adolphus , king of Sweden . It is not certain how he got his epithet of the ' Black Baron ' , but quite possibly it was from the colour of his hair rather than any perceived martial ferocity . Although this Robert Munro is traditionally 18th Baron and 21st overall chief of the Clan Munro , he is only the 11th Munro chief that can be proved by contemporary evidence . Other Munros . Robert Munro , 18th Baron of Foulis is often confused with his more famous cousin , Robert Monro of the Munro of Obsdale branch of the same clan who died sometime around 1675 / 1680 , and also served in the Swedish army in this period , writing a famous history on his exploits . This is perhaps forgivable , since during the Thirty Years ' War of 1618 – 1648 , there were as many as 27 field officers and 11 captains with the name of ' Munro ' in the Swedish army . Youth in Scotland . While still very young , in 1603 , Robert became the 18th Baron of Foulis , after the death of his father Hector Munro , 17th Baron of Foulis . Being a minor , he was by dispensation and special warrant from James VI of Scotland , dated 8 January 1608 , served heir male and provision to his father , all of the lands of Easter Fowlis . He married Margaret Sutherland the daughter of William Sutherland of Duffus on 24 November 1610 . At a meeting of the Privy Council held on 27 March 1612 , a commission was granted to Robert Munro of Foulis , along with others , including Alexander Gordon , brother of John , Earl of Sutherland , John Munro of Lemlair , George Munro of Tarlogie and Andrew Munro of Novar for the apprehension of two men charged with stealing from George Munro of Tarrell and bringing the alleged thieves before the Council to be delivered to the Justice for trial . Robert had another commission along with the Earl of Sutherland and others on 15 March 1614 , to apprehend three men at the instance of William Sutherland of Duffus for having murdered a certain Donald Angus Gairson , who failed to appear before the Justice on the day appointed to answer the charge against them . The murderers were captured and put on trial . During Robert ' s chieftaincy of the of his clan a feud arose between the Earl of Sutherland ( chief of Clan Sutherland ) and the Earl of Caithness ( chief of Clan Sinclair ) , caused by the latter hunting on the former ' s lands . Robert , being connected to the Sutherlands by marriage , sent a number of men from his clan to support the Earl of Sutherland . The Clan Mackay and Clan MacLeod of Assynt also assisted the Sutherlands . The Earl of Caithness gathered his forces and proceeded into Sutherland , however having heard of the large army that faced him he sent messengers to Sutherland with proposals of a peaceful settlement . His proposals of peace were refused and he was assured of battle the next morning . The Earl of Sutherland ' s army lined up , consisting of the Mackays on the left wing , the Sutherlands in the centre and the Munros and MacLeods on the right wing . As they advanced , Caithness ' s men fled , and the Munros went home not having engaged in battle , it is said to their disappointment . Robert is said to have had costly habits , and by 1618 he was so broke that he had to dispone his estate to his brother in law and allie , Lord Simon Fraser of Lovat ( chief of Clan Fraser ) , who remained in possession of the Barony of Foulis for some years . Soldier of Fortune . In June 1626 Robert joined the Scottish regiment of Donald Mackay , 1st Lord Reay ( 1591 – 1649 ) , which was then being recruited for Danish service , largely in the Scottish Highlands . The actions of this unit are well documented in the famous " History of Mackay ' s Regiment " written by his cousin Robert Monro of Obsdale , and published in 1637 . ( Men of several other Scottish clans fought in these wars including men from Clan Mackay , Clan Leslie , Clan Ramsay , Clan Hepburn , Clan Lumsden and Clan Ruthven ) . In Swedish service . Siege of Stralsund . Munro of Foulis progressed quickly through the ranks , advancing to Captain , then Major and finally Lieutenant Colonel in Mackay ' s Scottish Regiment . In 1628 the Danes sent several regiments including Mackay ' s regiment which included Munro ' s company to fight in the Battle of Stralsund also known as the defense or siege of Stralsund , where they helped defeat Imperialists who were forced to withdraw . A Munro officer proudly recorded that at the defense of Stralsund in 1628 one of his men by the name of Mac - Weattiche , " did prove as valiant as a sword , fearing nothing but discredit " . However , Danish intervention in the Thirty Years War was unsuccessful , the Danish king Christian IV made peace , and in 1629 Mackay ' s regiment including the Munro company was paid off , only to be re - hired as a going concern by the Swedish king Gustavus Adolphus . Bloc Castle . In July 1631 , Robert Munro of Foulis , with his own regiment alone , stormed and took possession of the fortified castle of Bloc in Mecklenburg , while en route to join the Swedish army at Werben . Battle of Breitenfeld . In 1631 the Scottish army marched to Leipzig . The famous Battle of Breitenfield ( also known as the Battle of Leipzig ) took place , near Leipzig , in September of that year . Tilly was defeated by Gustavus Adolphus and the Munros , who by their last charge contributed most to the victory of the Swedish Army . Sir James Ramsay was in command of the Scottish vanguard , and then it was on 7 September " after we had in the early morning , as the larke begunne to peep commended ourselbes and the event of the day to God , " that the great battle commenced . Whilst the Imperial cavalry scattered the Saxons on the left wing , the Scottish stood firm , firing for the first time in platoons . Hepburn formed a square and , when the Austrians had approached near enough , caused his victorious pikemen to advance . In the meantime Lord Reay ’ s MacKay and Munro Highlanders were equally successful . Battle of Lutzen . Towards the end of 1631 Robert Munro briefly returned home to his native land but did not stay long as he soon returned to the war in Europe . He subsequently took part in the Battle of Lützen ( 1632 ) , where the Munros were again victorious . At the battle the vanguard was led by Robert Munro of Foulis . Robert Munro ' s successful military career soon came to an end when during one of the many skirmishes of the Thirty Years ' War he was wounded in the right foot by a musket ball while crossing the Upper Daunbe river with Swedish troops . He was carried to Ulm , Germany , where his wound was dressed . However he soon fell into a low fever and died in March 1633 , aged about forty four years of age . In Ulm Sir Patrick Ruthven was Governor and Robert Munro had lived in the house of a barber and surgeon called Michael Rietmuller . By permission of the magistrates Robert was buried in the Franciscan church or " Barfüsserkirche , " where also his standard , armour and spurs were hung up . Magister Balthasar Kerner delivered his funeral sermon on 29 April 1633 . Robert Munro was succeeded by his brother , Sir Hector Munro , 1st Baronet of Foulis who was made a ' Baronet ' by King Charles I . Hector continued to command his brother ' s old infantry regiment in Germany , but the unit was disbanded very soon after .