_ORGILS - Ketill _ORGILSSON
Kollur _ORGILSSON - Gunnar 'spaki' _ORGRÍMSSON
Snorri 'godi' _ORGRÍMSSON - _urídur _ÓRISDÓTTIR
Arnór _ÓRISSON - Gudrídur _ORKELSDÓTTIR
Gudrún _ORKELSDÓTTIR - Hrafn _ORKELSSON
Ketill _ORKELSSON - Gudny _ORLÁKSDÓTTIR
Halldóra _ORLÁKSDÓTTIR - Gísli _ORLÁKSSON
Halldór _ORLÁKSSON - Hildur _ORLEIFSDÓTTIR
Jar_rúdur _ORLEIFSDÓTTIR - Ljótur _ORLEIFSSON
Marteinn _ORLEIFSSON - Gudlaugur 'audgi' _ORMÓDSSON
Harnall _ORMÓDSSON - Góa _ORRADÓTTIR
Gorr _ORRASON - Gudrún _ORSTEINSDÓTTIR
Gudrún _ORSTEINSDÓTTIR - Valgerdur _ORSTEINSDÓTTIR
Valgerdur _ORSTEINSDÓTTIR - Bótólfur _ORSTEINSSON
Didrik _ORSTEINSSON - Hrosskell _ORSTEINSSON
Illugi _ORSTEINSSON - Runólfur _ORSTEINSSON
Sighvatur _ORSTEINSSON - _órólfur 'smjör' _ORSTEINSSON
_ÓRUNN - Björn _ORVALDSSON
Björn _ORVALDSSON - Gudrídur _ORVARDARDÓTTIR
Gudrún _ORVARDARDÓTTIR - Helga _ORVARDSDÓTTIR
Margrét _ORVARDSDÓTTIR - _órir _YDRANDI