Facts: - regent: helena of rascia - mother: helena of rascia - predecessor: bela ii - house: Arpad dynasty - birth date: 1130 - issue: stephen prince geza Arpad odola helena , duchess of austria margaret iii bela iii elisabeth , duchess of bohemia - caption: geza 's royal seal - succession: king of hungary and croatia - reign: 1141 -- 1162 - spouse: euphrosyne of kiev - death date: 31 may 1162 1130 - father: bela ii of hungary - name: geza ii - birth place: tolna - coronation: 16 february 1141 - successor: stephen iii - image: gejza2 uh.jpg - religion: roman catholic Based on these bullet points, write a short biography describing the life of geza ii of hungary .
A:
geza ii -lrb- ; ; ; 113031 may 1162 -rrb- was king of hungary and croatia from 1141 to 1162 .he was the oldest son of bela the blind and his wife , helena of rascia .when his father died , geza was still a child and he started ruling under the guardianship of his mother and her brother , belos .a pretender to the throne , boris kalamanos , who had already claimed hungary during bela the blind 's reign , temporarily captured pressburg -lrb- now bratislava in slovakia -rrb- with the assistance of german mercenaries in early 1146 .in retaliation , geza , who came of age in the same year , invaded austria and routed henry jasomirgott , margrave of austria , in the battle of the fischa .although the german -- hungarian relations remained tense , no major confrontations occurred when the german crusaders marched through hungary in june 1147 .two months later , louis vii of france and his crusaders arrived , along with boris kalamanos who attempted to take advantage of the crusade to return to hungary .louis vii refused to extradite boris to geza , but prevented the pretender from coming into contacts with his supporters in hungary and took him to constantinople .geza joined the coalition that louis vii and roger ii of sicily formed against conrad iii of germany and the byzantine emperor manuel i komnenos .the ancestors of the transylvanian saxons came to hungary during geza 's reign .western european knights and muslim warriors from the pontic steppes also settled in hungary in this period .geza even allowed his muslim soldiers to take concubines .geza intervened at least six times in the fights for kiev on behalf of iziaslav ii of kiev either by sending reinforcements or by personally leading his troops to the kievan rus ' between 1148 and 1155 .he also waged wars against the byzantine empire on behalf of his allies , including the serbs of rascia , but could not prevent the byzantines from restoring their suzerainty over them .conflicts emerged between geza and his brothers , stephen and ladislaus ,...