Hi Jancon,
Not sure if you will read this, a long time since you posted on this thread.
I have found the death records of William to be: - 18/02//1861 at Gunnislake. I have also found his parents;
Thomas and Joanna Breen, and who I believe to be Thomas's parents: - John and Betty Courtiers however, I am struggling to find both confirmation of birth date for John and siblings of Thomas. if you have found any information, I would love to have this if possible.
If I can help in any way, please feel free to ask.
Thanks,
Julie