Composer John Francis Wade

"O Come, All Ye Faithful", also known as "Adeste Fideles", is a Christmas carol that has been attributed to various authors, including John Francis Wade (1711–1786), John Reading (1645–1692), King John IV of Portugal (1604–1656), and anonymous Cistercian monks.

Score: https://musescore.com/user/394796/scores/488541