Complex sentence: Niccolò Acciaioli (1310--8 November 1365), a member of the Florentine banking family of the Acciaioli, was the grand seneschal of the Kingdom of Naples and count of Melfi, Malta, and Gozo in the mid-fourteenth century.
Split into simpler sentences: Niccolò Acciaioli (1310--8 November 1365) was an Italian noble, a member of the Florentine banking family of the Acciaioli. He was the grand seneschal of the Kingdom of Naples and count of Melfi, Malta, and Gozo in the mid-fourteenth century.