The Germanic languages that I'm familiar with all use a prefix similar to ge- on past participles: German: Ich habe mir den Fuß gebrochen. Dutch: Ik heb mijn voet gebroken. But English ...
There are many words that in English are conjugated in the past tense to end in "-n": grow goes to grown, sew goes to sewn, throw goes to thrown, etc.. I'm guessing it was probably the regular ...