Complex sentence: At the time of the Anglo-Norman Invasion Henry II granted to Hugh de Lacey the lands of O'Melaghlin, king of Meath in return for the service of 50 Knights.In turn de Lacy shared some land among his subordinates (' de Lacy's barons').
Split into simpler sentences: At the time of the Anglo-Norman Invasion Henry II granted to Hugh de Lacey the lands of O'Melaghlin, king of Meath in return for the service of 50 Knights. He divided it among his subordinates (' de Lacy's barons').