Complex sentence: He was first Tanist and in 1543 had been granted the title of first Earl of Thomond by Henry VIII. Murrough bequeathed Leamaneh Castle to his third son Donough MacMurrough O'Brien, and also gave him the castle and lands at Dromoland.
Split into simpler sentences: He was first Tanist and in 1543 had been granted the title of first Earl of Thomond by Henry VIII. Murrough bequeathed Leamaneh Castle to his third son Donough MacMurrough O'Brien. He also gave him the castle and lands at Dromoland.