QUOTE(Aquarelle @ Oct 3 2007, 07:57 PM)

Jod, I'm interested in what you say about even stress - but English is a stress timed language which theoretically means that all words have a tonic stress. It is theoretically impossible to pronounce a two syllable word without stressing one of the syllables. This isn't the case in French and I can remember getting quite annoyed when English people called our dog BaLOU instead o BA-LOU. I can say BA-LOU with equal stress in a French or English sentence. But I can't naturally say PUR-CEL. I suppose that's not very logical.
Just leaping in to clear up a little something here. Words do not have tonic stress. Sentences do.
Each word has a syllabic stress (and you're absolutely right about English being stress timed as opposed to French being syllable timed) - at least one primary stress, at least one zero value stress in words of more than one syllable and sometimes a secondary stress too. This is what gives English its characteristic rhythmic flow (and what makes it a better language to sing and rap in than French, if you want the results to sound natural. It's also the reason why chanson française exists, but the least said about that, the better!). Tonic stress, on the other hand, is one syllable in a sentence (usually part of the final lexical item or content word) that carries a higher articulation value than other words and, most importantly, carries one of the four semantic altering tones in English (rise, fall, fallrise, risefall) - whence the name 'tonic stress'. There is generally only one tonic per utterance, otherwise intonative patterns would be all over the place, whereas there can be many syllabic stresses per utterance.
So technically, every word of two syllables has to have a strong and a weak syllable - so aquarelle is right, it's impossible to say PURCELL. We have to say either PURcell or purCELL. In theory.
However... this is an overly simplified view of things. Words in isolation do not behave like words in an utterance flow (think of the word Absolutely - most people agree the stress falls thus absoLUTley. Yet in a sentence such as 'Absolutely terrible' the most likely pronunciation is 'ABsolutely TErrible'). Words in a flow, or sentence for want of a better term, behave like one long word. We do not leave spaces in between syllables when we speak, nor do we generally do so between words (unless phonetics or semantic displacement dictates otherwise) - so we can consider that a sentence may behave as a long word and a word may behave, conversely, as a sentence.
If we then take the example of 'He had a big red car' and we want to stress the words 'big', 'red' and 'car', we will note that a difficulty arises due to the fact that the stress pattern 0110 is impossible in English (two stressed syllables cannot occur directly adjacent to one another - with the slight exception of certain germanic compound words), if we furthermore take into account that the 1 syllables have to fall on a more or less regular rhythmic pattern, then we see that the only solution is to insert slight pauses in between the 1 syllables to avoid their adjacency. The sentence is thus likely to be said 'He had a big..red..car' which has the pattern 00010101 which is totally acceptable.
This can also be applied to Purcell's name. We can, theoretically, stress both syllables if we insert the tiniest pause in between them (and in the case of an isolated name, the pause only needs to be as long as a stressed syllable) and make it sound like we're stressing both syllables, even though we really aren't.
So, as Aquarelle has pointed out - it is linguistically impossible in English to accentuate both syllables of Purcell, however, as declarative phonology shows, we can give the illusion of doing so by inserting a small pause to imitate the presence of a zero value syllable.
Thus, linguistically the possibilities are:
PURcell (10 - with the second vowel being realised as a schwa and therefore sounding somewhat soap powderish)
purCELL (01)
or...
PUR(0)CELL (101)
Stepping aside from declarative linguistics in favor of an historical and etymological approach, the name is most likely to be pronounced PURcell, with a schwa realisation of the second syllable vowel articulation.
Allan
(sorry if that was really boring, but it's so rare that my speciality turns up on the boards that I felt I had to try to make myself useful!)