id,case_id,role,surname,forename,occupation,place_id,raw_segment,seq 3871001,1980555,plaintiff,ap Lluwellan,John,,,"ap Lluwellan, John",0 3871002,1980555,defendant,ap John,Griffin,gent,590617,"ap John, Griffin, of Elvell, March of Wales, gent",0 3871003,1980555,defendant,ap John,Lewis,gent,642918,"ap John, Lewis, of Elvell, gent",1 3871004,1980555,defendant,Wyllyams,John,laborer,642918,"Wyllyams, John, of Elvell, laborer",2 3871005,1980555,defendant,ap Rees,David,gent,608963,"ap Rees, David, of Burley, gent",3 3871006,1980555,defendant,ap John,David,gent,642918,"ap John, David, of Elvell, gent",4