Complex sentence: The barony became extinct on Lord Roberts's death in 1914 while he was succeeded in the viscountcy and earldom according to the special remainders by his eldest daughter, the second Countess.
Split into simpler sentences: The barony became extinct on Lord Roberts's death in 1914. He was succeeded in the viscountcy and earldom according to the special remainders by his eldest daughter, the second Countess.