Wouldn’t know for certain. Bit outta my pay-grade, if you know what I mean… 
[quote=“MarjaE, post:63, topic:83867”]
It’s much easier to derive English four, five, and Gothic fidwor, fimf, from something like Welsh pedwar, pum, than Latin quattuor, quinque. Common Germanic usually transforms pre-Germanic p to f and pre-Germanic kw to hw (Grimm’s Law). [/quote]
You’d know way more than me about this. 
