Sidney Edward was the son of Edward and Sarah Ann Timms (née Clarke).
His father was born in Brize Norton, Oxfordshire, in 1877, the son of Joseph, a stone mason and builder, and Emily Eliza Timms. His mother was born in Stone, Staffordshire, in 1879. Edward and Sarah were married at Oxford St Clements in December 1897 and had five children, four of whom survived infancy: Sidney Edward b. Oxford 13 April 1898 bap. St Clement 26 June 1898, Alfred William b. Reading Berkshire 1899; Gladys Louise b. Worthing Sussex 1903 and Frank Leonard b. Brighton 1908.
Edward and Sarah were living on Boulter Street, Oxford, at the time of their marriage and still at the same address in 1898 when Sidney was baptised.
However, they had moved to Reading by 1899 when their second son was born and in 1901 were recorded on the census at Liverpool Road, Reading: Edward (24) a tailor's salesman, Sarah (22), Sidney (2) and Alfred (1).
Their daughter, Gladys, was born in Worthing two years later. Their youngest son Frank was born in Brighton in 1908 and in 1911 Edward, a 'commercial motor car driver' (furniture trade), and his four children, Sidney, Alfred, Gladys (7) and Frank (2) were recorded on the census at Ditchling Road, Brighton.
Sarah was not in the home on the night of the census and has not yet been traced on the census, but she died later that year (reg. J/A/S Brighton).
Edward died in 1925 (reg. Steyning Sussex).
Sidney's brother, Alfred, also served in the Royal Navy, joining as a Boy 2nd Class (J/38651) on 10 May 1916 and enlisting on a 12 year continuous service engagement on 13 August 1917, his eighteenth birthday. He was discharged shore, continuous service engagement expired, on 12 August 1929 and joined the Royal Fleet Reserve on 13 August. He did a further year non-continuous service between February 1936 and February 1937 rejoining the RFR the same month. He was mobilised on 28 September 1938 and demobilised in October 1938 then mobilised on 26 August 1939 serving until 24 September 1945.