William III, Earl of Ross
Uilleam came into his inheritance at a torrid time, his father Aodh dying at the Battle of Halidon Hill. Uilleam temporarily lost many of his lands. However, he returned from Norway in 1336 and regained them. Uilleam cultivated the friendship of the Stewarts, and was rewarded by being appointed Justiciar of Scotia. Uilleam's reign was marked by continued strife with his encroaching neighbour Raghnall Mac Ruaidhrí. In 1346, Uilleam killed Raghnall with eight of his men at the nunnery of Elcho.
Uilleam married Máire, a daughter of Aonghus Óg Mac Domhnaill, Lord of Islay (died 1314×1318/c.1330), chief of Clann Domhnaill. They had an heir, Uilleam, but he died in 1357. Uilleam's lands were forfeited by King David II in 1370. Uilleam died in 1372, and the Mormaerdom was given to his daughter Euphemia with her husband Sir Walter Leslie, thus ending the dynasty started a century and a half earlier by Ferchar. The dominions eventually passed to the Clann Domhnaill Lords of the Isles.
- Roberts, John L., Lost Kingdoms: Celtic Scotland in the Middle Ages, (Edinburgh, 1997)
|Mormaer of Ross
| Succeeded by|
Euphemia m. Walter Leslie