IN ESSAYS
Where the subject of the previous sentence was something other than the subject of the current sentence, use the full form of the subject (here, “Mr. X”) instead of a pronoun (“he”), since the pronoun will seem as if it refers to the subject of the previous sentence (here, "many people”).IN LoRs
Your recommender only needs to use your first and last name (Mr. Vince Ricci) once, at the very beginning of the letter, the first time he refers to you. Thereafter, he can refer you to as Mr. Ricci, or Vince.