Bingowings said:

It's still Adywan but spelt differently, phonetically it's identical.

I don't really agree it's phonetically identical myself. It's a subtle thing, but I read 'AD1' as sounding like 'ADY-WON' (or 'ADY-WUN' if you prefer), rather than sounding like 'ADY-WAN'.

However, as a fellow Scot, I know some broader regional accents here would pronounce the number '1' as 'WAN' rather than 'WON' (or 'WUN'). But where I'm from, we generally don't.

Splitting hairs perhaps, but that's how I see it. No biggie at the end of the day though.