Sydney Charles son of Charles Edwin Sargeant of Glebe Place Saint Mary Street, grocer, and Phoebe Mary (baptismal record)
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At the time of the 1901 England Census Sidney C Sargeant, age 22, born in Woolwich, scientific instrument maker, was with his parents at 1 Riverview, Barnes Surrey.
At the time of the 1911 England Census Sidney Chas. Sargeant, age 31, scientific instrument maker, was with his parents at 30 Northcote Rd, St Margarets, East Twickenham, Middlesex.
In the 1939 Register Sidney C Sargeant (b. 25 Sep 1879), single, instrument maker anti-aircraft range...., was [with his sister Grace and her family] at 33 Old Deer Park Gardens, Old Deer Park Gardens, Richmond Upon Thames, Surrey.
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Sydney C Sargeant died aged 88 years. 2