I guess this is science and technology. Linguistics is a science, you know. I am a little confused by the history of the letter 'W'. It came into being, in the Dark Ages I suppose, reportedly because it stood for a sound there was no letter for. My question: exactly which sound? I know in English, it stands for the "w" sound we have in 'water'. But in German and Polish (Polish was my mother's first language), it stands for the 'v' sound in 'vampire'. What was its original sound? Some sources say the 'w' in 'water'. But Classical Latin already has that sound. 'V' actually represents that sound, in Classical Latin at least, because in Classical Latin (and originally in English), 'V' and 'U' were actually the same letter. So what did it originally represent? 'W' in 'water' or 'V' in 'vampire'? I sure I am not the first person to ask this question. Thank you all in advance for your kindly replies.