Matthias of Gran was Archbishop of Esztergom in Hungary until his death at the Battle of Mohi

Battle of Mohi

The Battle of Mohi , or Battle of the Sajó River, was the main battle between the Mongol Empire and the Kingdom of Hungary during the Mongol invasion of Europe. It took place at Muhi, Southwest of the Sajó River. After the invasion, Hungary lay in ruins. Nearly half of the inhabited places had...

 (Sajo River) on April 11, 1241. As archbishop of Gran, he was the primate of Hungary.

He succeeded to the archbishopric of Esztergom in 1239 upon the death of Archbishop Robert, and fell with Archbishop Ugrin Csák

Ugrin Csák (archbishop)

Ugrin Csák was archbishop of Kalocsa , Hungary from 1219 until his death at the Battle of Mohi on April 11, 1241....

 and three other bishops (Reynold of Transylvania and Jacob of Nitra among them) as they were leading troops against Batu Khan

Batu Khan

Batu Khan was a Mongol ruler and founder of the Ulus of Jochi , the sub-khanate of the Mongol Empire. Batu was a son of Jochi and grandson of Genghis Khan. His ulus was the chief state of the Golden Horde , which ruled Rus and the Caucasus for around 250 years, after also destroying the armies...

.