Joseph Ellenbogen was called up for service in WW1 but not until June 1918 so only served for a few months.
His service record simply gives his birthplace as Russia - but it shows his marriage to Minnie and the children they had up until 1918 i.e.
Joseph Ellenbogen married to Minnie Cohen 20/5/1908 Liverpool (cannot trace on civil registration marriages - is this because they were Jewish?)
Children up to 1918:
Louis b.4/5/1909 (he died in Warrington in 1994 and his death recorded under Ellenbogen & Ellenbaum.)
Barny (Barnett) b.14/12/1910
Leah b.27/5/1913
Betsy b.10/12/1915
Elsie b.30/11/1917
So, sometimes Ellenbogen is Ellenbaum and Cohen becomes Jofsky/Ajovsky/Arjoski.
I suspect you have most or all of this already.
Annette
yes i have most of that, but thanks.. I have my Grandad Sam's birth Certificate which gave me the Ajovsky, My mum has said who the kids were (dont think she met many of them) and all of the ones with various spellings of Ajovsky have the same names so im 99% certain that they are all children of minnie....the WW1 records have her name as Cohen, but this is a Jewish name and I presume that she took / was given that name initially because it was easier for the British people that were filling in documents...ive been told that i was "lucky" to find her proper name.
I believe they left Russia (Poland didn't technically exist then) in rather a hurry due to some pogrom or something Russians didn't like Jews either as the abject poverty they lived in initially kind of suggests to me that you wouldn't choose to live that way if you didnt have to, I might be wrong obviously. they are also dont appear to be related to the many Ellenbogens that lived in l'pool at the time.
having initially said i dont know much, Ive not done bad

but this is where the road ends as far as going further back on my mums fathers side,
Granddad Sam and his twin Israel (another Jewish name) were both in the Royal Army Service Corps and I do have their numbers, just wondering if getting Sams service records would shed anymore light -