It was uploaded that way to Geni more than 10 years ago and apparently no one has tried to source their lines. At your service to implement your findings.
The best I could do was several generations down:
http://www.british-history.ac.uk/report.aspx?compid=56985#n39
William, the Domesday tenant of Coughton, has been identified with William Fitz Corbucion (fn. 38) alias William de Studley (fn. 39) and he is believed to have given his lands in Coughton to Ranulf brother of Walter Abbot of Evesham, (fn. 40) which Ranulf already held Kinwarton and Weethley (q.v.) together with extensive lands in Worcestershire from the abbot. (fn. 42) Ranulf is presumed to have died in about 1129 and to have left two sons, William son of Ranulf and Robert son of Ranulf, who at Michaelmas 1130 paid relief for lands in Warwickshire. (fn. 43) Ranulf's lands, including Coughton, were evidently equally divided between his two sons, one being described as the knight of Coughton and the other as the knight of Kinwarton, who, with their descendants, shared equally the service of 2 knights due to the abbot of Evesham. (fn. 44)
I await your (or anyone’s) suggestions & Citations.