:)Fiona
It is a Small World! Frank Gillan (b1887) worked at Lobnitz Shipyard if I am correct. I have no visibility on Gillan family history previous to Hugh and Mary, although Keenan and McGill are strangely familiar. My Father knew the Gillan sisters well (Millie, Agnes and Anne) as he used to visit them just after the war when his ship HMS ROCHESTER docked in Glasgow.
Mary Gillan (d1974 Coventry) married Daniel James Maginniss (d1954 Coventry) in Yoker in 1912. After a sojurn in Mexico 1913-14, presumably with Hugh Jr, they moved to Coventry in 1916 for Daniel to take up an appointment with Siddleley-Deasy, a company he remained with until retirement through illness in 1954. They had five children.
Daniel James b1914 Yoker, d1985 Warwick. No marriage.
Mary Annie (Molly) b1916 Old Kilpatrick, d1988 Kirkcudbright. Marriage no children.
Hugh b1918 Coventry, d1945 Saye Burma (KIA serving with 2 Norfolks). No marriage.
Nicholas Bernard b1923, Coventry d1991 Lockerbie. Children: Daniel & Christopher.
Clement Joseph b1927 Coventry, d2007 Coventry. Children: Clement Hugh (Me) & Ruthmary.
I trust this adds a little colour to another side of the Gillan story, although there is of course much more to tell.
Clem