Frederick Oakeley (5 September 1802 – 30 January 1880)[1] was an English Roman Catholic convert, priest, and author. He was ordained in the Church of England in 1828 and in 1845 converted to the Church of Rome, becoming Canon of the Westminster Diocese in 1852.[2] He is best known for his translation of the Christmas carol Adeste Fideles ("O Come, All Ye Faithful") from Latin into English.[3]