Hi
Realise it’s some time since you posted... I’m wondering if you know more about your g/grandfather now & if his parents were James Byrne & Bridget ‘Biddy’ Farrell? My late grandfather was Joseph/ Joe Byrne the youngest of said couple, born 1905 & the two men are so alike it’s uncanny. If I can work out how to post a pic successfully I can show you. My grandfather was also a Merchant seaman.
I only have an approx DoB for James Byrne Jr & that he married a Susan. I’m hoping you see this sometimes I would love to hear more & exchange a picture!