It helps to have more than just the title to find a song. I searched for "my dear Irish home" at the Irish Traditional Music Archive and found three entries.

https://www.itma.ie/

If you google "My Dear Irish Home" in quotation marks you'll get the best results. But if you can add just one phrase from the lyrics in quotes, you'll get better results. e.g., "my dear irish home" "my mother sneezed"

Here's another song, this one on sheet music: https://wardarchives.pastperfectonline.com/library/C802B3AF-3C2D-407C-A931-350474551240