In the 1911 census return the family were living at 10 Rhyl Street, Toxteth. The number of children seems to have been misunderstood as it says 7 born, 2 died and 5 living. However from census returns, birth and baptism records I can identify a total of 10 children, 2 of whom died.
Other details from the census return show that Samuel Joseph Tonkies was 16 and working as a plumber's labourer.
Just to confuse matters further, Ancestry.co.uk has for some reason got this census return listed twice with small differences in transcription (eg John Edward's place of birth is Salford in one, Liverpool in the other)
The CWGC record for Samuel is under the name G.J. Tonkies but I am sure it is the right man as it gives his mother's name as Mary Jane. There is not another Mary Jane Tonkies in the census returns or birth records, there is also no G.J. Tonkies.
click here to see the CWGC entry for G.J. Tonkies
Samuel was in the Mercantile Marine (Merchant Navy) but his death was eligible for CWGC status because he was killed as a direct result of enemy action.
The death at sea index (below) also has the name G.J. Tonkies. These sources show that Samuel was a fireman and trimmer on the SS Artist which was sunk by enemy on 27th Jan 1917. Samuel was 'supposed drowned.'