Hi there, just spotted this post. My grandfather was William Hawthorne, one of the brothers of Hugh. Most of the info you have is correct. My daughter had been working on the family tree pre lockdown and by chance my husband an I were visiting Ireland. I contacted the minister at Magragall (Rev Dark) who is a font of knowledge on the family. He has been contacted over the years from family members far and wide. We had one living relative still living there and he had been working tirelessly to have two family members whose names had been missed from the war memorial in Lisburn. He was successful and their names were added in the last few years.