Whakakiia te rerenga e whai ake nei: Ko Pyotr Grigoryevich Demidov (Russian; 5 Whiringa-a-rangi 1807 <unk> 14 Paenga-whāwhā 1862) he rangatira me te rangatira o Ruhia. Ko te mea tino nui i uru ia ki te
Te pakanga o te tau 1849 ki Hungary.