 According to the MS 1467, Eachann, youngest son of Alasdair Mòr, had two sons, Charles and Lachlann.Nothing definite is known of Eachann, yet the Sleat seanachie McVurich claimed that he had another son, "Siothach an Dronan", who settled in Ireland and founded Clan Sheehy (MacSithigh) of Munster.This clan is recorded in 1552, as fighting in army of O'Neill, and described as gallowglass.