In short, Carloman & this brother inherited titles from Pepin the Short
... rule of the Frankish kingdom between Pepin and his elder brother, Carloman,... [DOC] [TLE] Carloman I - Wikipedia [PAR] Carloman I, also Karlmann (28 June 751  4 December 771) was king of the 
Franks from 768 until his death in 771.