In short, Carloman & this brother inherited titles from Pepin the Short
In 
the division of territories agreed with his brother Carloman, Pepin... [DOC] [TLE] Pepin The Short - The Middle Ages - Facts for Kids - History for Kids [PAR] Introduction: Pepin III or Pepin the Short was the King of Franks from 751 till his ... 
Pepin and his brother Carloman jointly ruled Francia after the death of their ... 
Pepin's half brother, Grifo also claimed his share in inheritance after Martel's 
death.