 
 <translate> To answer the above question, the relevant sentence is: Daniel Lee Truhitte (born September 10, 1943 in Sacramento, California) is an American actor, best known for his portrayal of Rolfe Gruber, the young Austrian telegraph delivery boy who performed "Sixteen Going on Seventeen", in the film The Sound of Music (1965).
So, the final answer is Daniel Lee Truhitte. <ibo> Iji zaa ajụjụ a dị n'elu, ahịrịokwu dị mkpa bụ: Daniel Lee Truhitte (amụrụ na Septemba 10, 1943 na Sacramento, California) bụ onye omee America, nke a kacha mara amara maka ihe nkiri ya nke Rolfe Gruber, nwa okorobịa na-enyefe telegram nke Austria nke rụrụ "Sixteen Going on Seventeen", na ihe nkiri The Sound of Music (1965). Ya mere, azịza ikpeazụ bụ Daniel Lee Truhitte. 