Given the question: - ru amateurclubs is cambridge university r.u.f.c. barbarian f.c. castleford rfc wakefield rfc - ru nationalteam is england - ru nationalpoints is -lrb- 0 -rrb- - birth name is john warburton sagar - death date is 10 january 1941 - ru nationalyears is 1901 - ru nationalcaps is 2 - university is jesus college , cambridge - birth date is 6 december 1878 - death place is bournemouth , england - ru position is fullback - birth place is easington , county durham , england Given the details above, guess who could this information be about.
The answer is:
john warburton sagar