@BeebsyMcA My wife is an excellent whistler (she can whistle folk tunes at session pace, it's a thing to hear) and she was motivated to get good at it by her mother telling her that "A whistling woman and a crowing hen are neither fit for god nor men".
This was in South London and there's no Irish in her ancestry as far as she knows, but her mum was an orphan and Gill thinks she might have been from a traveller background.
#folklore #superstitiion #whistle