I'm looking for the etymology of words like godparent, godchild, etc. In particular, why "god" is added as a prefix? So far I haven't found an explanation. Wiktionary (for godfather) states:
From Middle English godfader, from Old English godfæder (“godfather”), equivalent to god + father. Cognate with Old Saxon godfadar (“godfather”), Middle Dutch godvader (“godfather”), Danish gudfader, gudfar (“godfather”), Swedish gudfader, gudfar (“godfather”), Icelandic guðfaðir (“godfather”). Morphologically god + father.
Not very helpful. Wikipedia does not provide clues either. It states:
... by the end of the 6th century, they were being noted to as "compaters" and "commaters"
which is Latin. Spanish and French terms follow a similar structure, without adding the "god" prefix (eg. "com-padre" and "co-madre" in Spanish). It seems the German word also does not contain the particle "god" in it. Any idea about the origin of such word?