George was the only son of Thomas Sinclair Kennedy and Hephzibah (also 'Hephzibar') Kennedy nee Bradley.
His father Thomas Sinclair was the son of George and Mary Kennedy and was born in Durham in 1847 (birth registered J/F/M Chester-le-Street); he was baptised on 14 March 1847 at Whickam, Durham. Hephzibah Bradley was the daughter of James Bradley and was born in Nottingham in 1851 (birth registered J/A/S Radford).
Thomas and Hephzibah were married on 8 March 1874 at St Hilda, South Shields, Durham, and had at least eight children; Mabel Gertrude (birth registered 1875 J/F/M Nottingham), Florence b. 1874 (registered J/A/S South Shields), Hilda b. 1880 (registered J/A/S Lanchester, Durham), Dora Isabel b. 1878 (registered A/M/J Middlesborough), George Archibald Sinclair b. 3 January 1882, baptised 6 February 1882 at Shotley Bridge, Durham, Hephzibah (Effie) Bradley b. 1883 (registered J/A/S Lanchester), Beatrice b. 1885 (registered J/A/S Nottingham) and Ada Muriel b. 1889 (registered A/M/J Nottingham).
In 1881 Thomas (34), a grocer, and his wife were living at Front Street, Dipton, Lanchester, Durham. They had four daughters, Mabel (6), Florence (4), Dora (2) and Hilda (1).
By 1891 they were living in Nottingham at 20 Derby Road. Thomas was a shoe salesman and Hephzibah a saleswoman, presumably working with Thomas. Their eight children were all living at home: Mabel (16), a dressmaker, Florence (14), Dora (12), Hilda (10), George (9), Hephzibah (7), Beatrice (5) and Ada (1).
Hephzibah Kennedy died on 30 July 1899 at the age of 51. At the time of her death the family was living at 88 Wilford Grove, Meadows, Nottingham.
George joined the Royal Navy on 21 August 1900 and at the time of the 1901 Census was at Sheerness, Sheppey, serving in HMS Wildfire.
His widowed father was still living at 88 Wilford Grove, Meadows, Nottingham, at the time of the same census when his occupation was given as warehouse assistant. Six of his seven daughters were at home on the night of the census; Mabel (26), no occupation given so she may have been keeping house for her father, Dora (22) a machinist, Hilda a fancy neckwear machinist, Hephzibah (17) a shoe shop assistant, Beatrice (15), no occupation given, and Ada (11) who was still at school. Florence has not yet been traced on the 1901 Census.
George married 21 year-old Florence Ada Fleckney, the daughter of Samuel Fleckney, at St James Enfield, Middlesex, on 21 June 1908.
Only Beatrice Kennedy has been traced on the 1911 Census and she was then living with her widowed aunt, Louisa Broadrick (65), at 48 Dryden Street, Nottingham. Her aunt was a tobacconist (employer) and Beatrice was employed as a shop assistant (tobacco).
At the time of George's death in April 1917 his wife was living at 89 Rossington Road, Sneinton Dale, Nottingham, although the CWGC record gives a later address of 69 Jasper Road, Enfield Highway, Middlesex. There do not appear to have been any children of the marriage.
George's father was living at 22 Woodward Street, Nottingham, at the time of his son's death. Thomas Sinclair Kennedy died in 1935 at the age of 88 (death registered September, Nottingham).
Of George's sisters:
Mabel, Hilda and Dora remained unmarried and continued to live in the family home at 33 Woodward Street until their deaths. Hilda died on 17 December 1938 aged 58, Dora died on 23 May 1955 aged 76 and the eldest sister, Mabel, died on 18 October 1963 aged 88.
Florence married Colin Campbell Hunter (date of marriage not yet traced). She was living at 86 Cremorne Street, Meadows, Nottingham, when she died on 2 May 1922 at the age of 45. They may have had a daughter, Hephzibah Kennedy, who married Thomas McCormick in 1934 and died in 1946.
Hephzibah married Henry Ducker in 1913 (marriage registered J/A/S Nottingham); they had at least one child, Kathleen Marjorie, who was born in 1915 (birth registered J/A/S Nottingham). Hephzibah died on 7 October 1959 aged 76.
Beatrice married George R Cranch in 1923 (marriage registered A/M/J Nottingham) and died on 2 January 1956.
Ada probably married Cyril S Clarke in 1922 (marriage registered A/M/J Nottingham) and died in 1934 aged 44 (death registered September, Nottingham).