Complex sentence: Ranald (d.1386), chief of the Clan Ranald had five sons, the eldest Alan succeded him as chief of Clan Ranald whose younger brother Donald became chief of the Clan MacDonnell of Glengarry.
Split into simpler sentences: Ranald (d.1386), chief of the Clan Ranald had five sons One of these five, Alan (d.1430) succeded him as chief of the Clan Ranald. Another of the five sons, Donald (d.1420) became chief of the Clan MacDonnell of Glengarry.