hi briony, well you wouldn't belive how many people are doing the same family trees,so you must know susan kennedy nee castles then. she was helping your grandfather with this and now she been helping me for a year, i found her on ancestry too, is your brother shannon long he also been in touch with me thought myheritage.com. i didn't know your grandfather that much only seen him a couple of times in my life last time is seem him was at my grandfather's funeral in broadford 25 years ago. yes i did know about him passing susan told me, you must have to same information that i have got if i find anymore infomation that's not on my family list i let you know all the best to you. cheryl