The OED entry for happen notes the following:
In Middle English fel it hap meant "it happened."
A search for the phrase reveals this OED entry and nothing else relevant. It is not clear how one would use this phrase in a conversational context. For example, could it be used in a sentence like the following?
Fel it hap that the man did dege.
i.e.:
It happened that the man died.
Or, was it used as an exclamation?
The man did dege! Fel it hap!
*All "Middle-English-y" example sentences here are of my own making, and I know nothing about Middle English.
How was this phrase used? Can you provide any notable examples from medieval works?
Thanks in advance!