Without going into too much detail, the answer is that one of the conditions cross the Brythonic wa

Yes is the answer, at least if we put credence on this video about the history of Cardiff ('Cardiff Through the Ages') and filmed back in 1999. Well-known presenter said at the beginning of the film:
What do we do with things like this? Well, you start by have a look at the origins of the name. Then I would like to consider for a while and there is no deeper significance to linguistic analysis of this strange cake decorating classes melbourne video. cake decorating classes melbourne
Where does the name come from Cardiff so? I am not saying anything new in noting that the old form of Brythonic euphemism. (Professor Hywel Wyn Owen had discussed it on Radio quite recently.) The Brythonic language was Welsh (and most of Britain) during Roman times, and she and her sister developed the Welsh -languages (Cornish and Breton), sometime around the fifth and sixth centuries AD. There are very few examples of direct Brythonic have survived, cake decorating classes melbourne but historical linguists are able to estimate pretty good on syntax, phonology (the sounds of it) and its vocabulary.
The two words are relevant in the Brythonic kagro * (the asterisk cake decorating classes melbourne indicates that there is an example of the word survives on the cover) and * Damo. With the passage of the centuries, gave the word * kagro fort and gave Damo Taf in Welsh. So these two words together that gives us the name of our capital city. But if so, why does not the Caerdaf form?
Without going into too much detail, the answer is that one of the conditions cross the Brythonic was the name, that is not * but * kagrotami kagrotamo. He caused the final affeithiad-to-the-front of her and that is, it changed its quality (cf. giant / giants). So we had not Caerdaf cake decorating classes melbourne but Caerdyf, which is the usual form of Welsh in the Middle Ages. Although the final one element in Llandaff, must be that name is constructed later, after the Welsh Brythonic stirring cake decorating classes melbourne and after the disappearance of the last syllable in the case caused the affeithiad Caerdyf .
Caerdyf were borrowed into English with occasional adjustment: move the accent to the first syllable, changing the final vowel, and change the-f-i (cf. Llandaff and Llandaff). In Welsh, by the sixteenth century, we find examples of Cardiff and the new form and the old form Caerdyf. Can interchange f and f in Welsh (eg beaver / addanc) and Cardiff are the product cake decorating classes melbourne may be an attempt to make sense of the day was called by assuming that the second element. Regardless of the exact reason, very shortly Cardiff was mostly in the form nowhere.
The video claims that English was the name Cardiff / Cardiff originally. But that is a misunderstanding. True that have borrowed from Caerdyf Cardiff, Cardiff and later development of Caerdyf. But without doubt, the Welsh form was first and English later. It tells about Cardiff 'it's the one place in Wales Where the English name was coined and before the the English' as say - based on the names of Bristol and Liverpool - Bristol and Liverpool are amongst the Few places section in England Where the English name was coined and before the the English '.
The video also talks about 'the word Roman fort'. Hard to know exactly what that means, but I assume the implication is that the Latin word is a fortress. That again is wrong, of course. We can trace the form of the name back to Roman times, but not in their language it was formed, as we have seen.
This video was produced in 1999, the year of the establishment of the National Assembly. In that year he became Cardiff to be the capital in the true sense of the word. But this video is actively de-more Welsh city, gambriodoli its name to two different language and ignoring his Welsh roots. Difficult to imagine a video producer cake decorating classes melbourne for one of the other European capitals are actively opting out of their own country in this way. But this trend is prevalent in a number of discussions on political and linguistic Cardiff - is an opportunity to say more about that ever again.
After being told about the origin of the name, the video is about all the people who have settled in Cardiff over the centuries, including the Romans, the Irish, the Vikings, and Normans. When we hear about these, we have the story of another group who came to the area. I will leave you to you to decide how far the next piece of this video cellweirio (or not):
Thank you. Caption law of Henry VIII in 1536 ('An Acte for Laws & Justice to what ministred in Wales in like fourme mp it is in this Realme') was: 'That sub Said Country of Dominion of Wales shall be, and stand for ever from parhau henceforth Incorporated, united and annexed to and with this his Realm of England '.