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.
Let’s head to Latvia! In the 13th and 14th C, names were predominantly of Low German origin, and this is clear even when the names occur in Latin documents, as our two examples of today’s mystery name do:
It is clear that this is a diminutive of something — the -ke ending is a giveaway. When the name is used by men, it is a diminutive of Theodoric, via the Low German form Dederik. However, the two examples that we have here are definitely feminine. For example, here is the entry for one of them:
There is no way “Lady Dedike, wife of Hinrich Westfal” could be anything but a woman. The question is: What name is this a diminutive of? Do you have any thoughts?