English invasion of Scotland (1400) English invasion of Scotland (1400) The English invasion of Scotland of August 1400 was the first military campaign undertaken by Henry IV of England after deposing the previous king, his cousin Richard II. Henry IV urgently wanted to defend the Anglo-Scottish border, and to overcome his predecessor's legacy of failed military campaigns. A large army was assembled slowly and marched into Scotland. Not only was no pitched battle ever attempted, but the king did not try and besiege Scotland's capital, Edinburgh. Henry's army left at the end of the summer after only a brief stay, mostly camped near Leith (near
Busbie Castle cable which wound itself fantastically round the walls. He also states that the castle probably had three floors, was roofless and fast falling into decay and regards it as being from the 14th century and probably built by the Mowat family who came from Flintshire in the 12th century. A Robert de Montealt (Monteacute) is recorded as being in Scotland at the time of King David I; later several soldiers of the name de Montealt are recorded a shaving led armies into Scotland. William Craufurd of Wallston married a daughter of Mowat of Busbie circa 1400. A Charles Mowat of