They are brilliant. Don’t know if you heard Ian Lynch’s solo project One Leg One Eye but it’s even darker. https://nyahhrecords.bandcamp.com/album/and-take-the-black-worm-with-me

He also has a podcast Fire Draw Near where he does a deep dive into Irish folk music: https://m.soundcloud.com/firedrawnear/died-for-love-the-butcher-boy