Thanks, I had thought of that but it didn't seem to fit with it being concentrated in one area of Scotland. (I edited my post just as you replied). Perhaps it's something in the Ayrshire accent, although it's not a particularly distinct one like the East Coast. Maybe a bumbling Ayrshire clerk was having a bad day and wrote Anaple instead of Anable and the parents decided they liked it!
Hovoplodok-doplodovok-plovodokot-doplodokosh?
Splgraw fok fok splgrafhatchgabrlgabrl fok splfok!
Zgra kra gka fok!
~The Loch Ness Monster Song~
Edwin Morgan