Every Monday we will post an entry that hasn’t yet been published with a view towards harnessing the collective onomastic power of the internet. If you have any thoughts about the name’s origin, other variants it might be related to, other examples of its use, etc., please share them in the comments! If you wish to browse other Mystery Monday names, there is an index.
Today’s name is a masculine name from 11th C France, recorded in Latin. The Latin form of the name makes it tempting to render the second half of it as relating to Latin fidius ‘more faithful’; but that leaves us without any way of explaining nem, which makes it rather wishful thinking.
Do you have any thoughts about the origin of the name? Any other examples of it? Please share in the comments!