Ibrahim I was a bey of the Karamanids, a Turkoman principality in Anatolia in the 14th century.
His elder brother Musa had succeeded Mahmut in 1312.
[1] But soon Ibrahim laid claim to throne and rebelled in 1318.
Although the details of the civil war are not known, according to Ibn Battuta, the famous Arabian traveller who acted as Ibrahim's envoy to Mamluk Sultanate of Egypt, he won the throne with the help of Mamluks.
But he died no sooner than 1343 when he campaigned to Armenian Kingdom of Cilicia.