Ever arrogant, stepping in and claiming the prize where others labored, Rome thinks it evangelized Germany. Here's her spin on "Saint" Boniface, from EWTN:
"Isolated missionary groups had penetrated central Germany in earlier times, but not until the eighth century was there a systematic effort to Christianize the vast pagan wilderness."
Let me translate that sentence: "The Culdees under the rule of Columbanus of Iona had systematically penetrated central Germany in earlier times and planted churches free of Rome's corrupting influence, but not until the eight century was there a systematic effort to Romanize the vast newly Christianized region."
I think I interpolated a little bit. Sorry. Those poor Culdees probably didn't have the proper Vulgate, either.
I think Jesus put it more succinctly: "Another parable put he forth unto them, saying, The kingdom of heaven is like to a grain of mustard seed, which a man took, and sowed in his field: Which indeed is the least of all seeds: but when it is grown, it is the greatest among herbs, and becometh a tree, so that the birds of the air come and lodge in the branches thereof." (Matt. 13:32) The tree in this parable is not a good thing. Birds are not good things. They steal the Word. Mustard seeds are supposed to grow into mustard plants, not trees.
Jesus also put it like this: "But while men slept, his enemy came and sowed tares among the wheat, and went his way." (Matt. 13:25). So whose fault is it? We must not sleep.