Oliver R. Avison
Oliver R . Avison ( June 30 , 1860 - August 29 , 1959 ) was a Canadian doctor , physician , humanitarian , missionary and professor , who spent over four decades spreading Western medical knowledge in Korea during the Kaehwagi or Enlightenment Period . 
<triplet> Oliver R. Avison <subj> June 30, 1860 <obj> date of birth <subj> August 29, 1959 <obj> date of death