GREGORY III DUKE de NAPLES

GREGORY III DUKE's father was SERGIUS I DUKE de NAPLES and his mother was UNKNOWN DROSU.  His paternal grandparents were MARINUS de NAPLES and EUPRAXIA (Euprassia).  He was an only child.  He died in 0886.¹ 

He had a biological son named ATHENASIUS II DUKE.