I'm not sure how to add an alternative form of
Gerard... but if anyone's interested, here's the info:
Gradus (masculine) or Grada (feminine) are Dutch versions of
Gerard. Used to be fairly popular in the 1800s, but not anymore today. Found it while doing genealogy research.
Btw, if anyone can tell me how to add this info to the website, please let me know! Do I "correct a given name" or "add a new given name"?