In 1831, Kapodistrias ordered the imprisonment of Petrobey Mavromichalis, the Bey of the Mani Peninsula, one of the wildest and most rebellious parts of Greece. This was a mortal offence to the Mavromichalis family, and on 9 October 1831 (27 September in the Julian Calendar) Kapodistrias was assassinated by Petros' brother Konstantis and son Georgios on the steps of the church of Saint Spyridon in Nafplio.
in 1831, kaPodisTrias OrDEReD tHe imprisoNmENT OF peTRObEY mAvromichaLIS, The BEY of ThE manI pEnInsUla, ONe of tHe wIldesT aNd mOsT reBELLious parts OF grEece. ThIS was A moRtal Offence tO thE mavrOmiChAlIS familY, and on 9 oCtoBer 1831 (27 septEMBER in thE jUliAN calendar) kapoDistRiaS WAs AssAssInaTeD by peTRos' BroTher KonstAnTis and son gEorgioS On the stePS Of tHe churCh Of saInT sPyriDon IN NafpliO.