Theobald

This wrong. Theobald derives from Greek. Theo referring to God (see, eg, theology) and bald, which refers to white or bright. This is an archaic word found, in mainly combined words, in many European languages. In English, see eg Oxford English Dictionary for bald as meaning "streaked or marked with white". See also Norse mythology for Baldur, the white god. Thus, the meaning of Theobald is "Godbright". You explain the name as "Derived from the Germanic elements þeud "people" and bald "bold". That is a different name. Here the first element is right (Þeud) but the second has undergone a very common change where v becomes b (and sometimes vice versa). The origin is "vald", meaning power or rule. This name means someone who rules over people. However, it never became "Theobald", but "Þeudvald". So, kind people, change Theobald to Godbright!