Hi Beverley
I sincerely hope you pick this up!
My grandfather was also on the lusitania and sadly he too perished leaving behing his young wife and small 3 year old son. He was returning to the uk, travelling on his own. His name was Percy (Thornton) Jackson. Percy's father was a William Jackson born in 1852/3.

Please feel free to contact me, perhaps there is a connection somewhere here!