"Silent Night" was composed by Franz Xaver Gruber, with lyrics by Joseph Mohr. The song was first performed on Christmas Eve in 1818 in a small church in the village of Oberndorf near Salzburg, Austria.
What I found interesting about this beautiful carol is that Mohr requested that his words by accompanied by guitar music and that was how it was first performed--not with an organ, or another typical church instrument. So in a way, it's a natural for the ukulele.
I like this easy solo version by Aaron Keim . The tab is available for free on his website The Quiet American.
Playing fingerstyle ukulele, with information about the songs and where to find the ukulele tablature so that you can play these songs yourself.