who are all the bishops who served?
geir vidalin, steingrimur jonsson, helgi thordersen, 'petur petursson, hallgrimur sveinsson, thorhallur bjarnarson, jon helgason, sigurgeir sigurdsson, asmundur gudmundsson, sigurbjorn einarsson, petur sigurgeirsson (son of sigurgeir, olafur skulason, karl sigurbjornsson (son of sigurbjorn ein, agnes sigurdardottir
which of these started in 1846 or after?
helgi thordersen, 'petur petursson, hallgrimur sveinsson, thorhallur bjarnarson, jon helgason, sigurgeir sigurdsson, asmundur gudmundsson, sigurbjorn einarsson, petur sigurgeirsson (son of sigurgeir, olafur skulason, karl sigurbjornsson (son of sigurbjorn ein, agnes sigurdardottir
which of these finished in 1866 or before?
helgi thordersen