Rubuta ci gaba don wannan sakin layi - An haife shi a Wiener Neustadt a 1558, Maximilian III shi ne ɗan na huɗu na Sarkin sarakuna Maximilian II da Empress Maria na Austria. A shekara ta 1585, ya zama Babban Maigidan Teutonic Order, kuma daga nan aka san shi da laƙabin "Maigidan Jamusanci" ("der Deutschmeister"). A shekara ta 1587, ya kasance dan takarar kujerar mulkin Poland-Lithuania Commonwealth, kuma wani ɓangare na masarautar Poland ya zaɓe shi sarki. Sakamakon tsarin zabe mai cike da rudani, duk da haka, an zabi wani dan takara. Maximilian ya yi ƙoƙarin warware takaddama ta hanyar soja, ta haka ne ya fara yakin basasa na Poland. Kodayake yana da goyon baya sosai a Poland, abokin hamayyarsa ya jawo magoya baya da yawa. Bayan wani yunƙurin da bai yi nasara ba don mamaye Kraków a ƙarshen 1587, Maximilian ya ci nasara a yakin Byczyna
a cikin Janairu 1588, kuma aka kama shi. An sake shi ne kawai ta hanyar shiga tsakani na Paparoma Sixtus V. A shekara ta 1589, a hukumance ya yi watsi da da'awarsa ga kambi na Poland. A cikin 1595, ya gaji kawunsa Ferdinand II a matsayin Archduke na Further Austria da Gwamnan Tyrol, inda ya tabbatar da cewa ya kasance mai goyon baya ga Counter-Reformation. Maximilian ya mutu a Vienna a 1618, kuma an binne shi a cikin kabarin da aka rufe a cikin Innsbruck Cathedral.