id,case_id,role,surname,forename,occupation,place_id,raw_segment,seq 4814046,2300499,plaintiff,Mowbray,John,,806355,"Mowbray, John, of Norfolk, Duke",0 4814047,2300499,defendant,Grey,John,knight,,"Grey, John, knight",0 4814048,2300499,defendant,Grey,Constance,,,"Constance, his wife",1