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- [S8] 1871 UK Census, RG10/1532/22/35 Brickkiln House, Holywell cum Needingworth (Reliability: 2).
Recorded as John Gray (M) Son b abt 1861 in St Ives, Huntingdonshire Age: 10 years
- [S10] 1891 UK Census, RG12/1241/55/21 Nicholas Lane, St Ives (Reliability: 2).
Recorded as GRAY, John (M) Head b abt 1860 in Needingworth, Huntingdonshire Occupation:Bricklayer Age: 31 years Married
- [S11] 1901 UK Census, RG13/1480/32/12 Melbourne Place, St Ives (Reliability: 2).
Recorded as GRAY, John (M) Head b abt 1859 in Needingworth, Huntingdonshire Occupation:Bricklayer's Labourer Age: 42 years Married
- [S7] 1861 UK Census, RG9/979/58/34 John Street, St Ives (Reliability: 2).
Recorded as GRAY, John (M) Son b abt 1859 in St Ives, Huntingdonshire Age: 2 years Unmarried
- [S2] Register of Births, St. Ives, Huntingdonshire Dec 1859 vol 3b page 261 (Reliability: 3).
- [S7] 1861 UK Census, RG9/979/58/34 John Street, St Ives (Reliability: 3).
Recorded as GRAY, John (M) Son b abt 1859 in St Ives, Huntingdonshire Age: 2 years Unmarried
- [S8] 1871 UK Census, RG10/1532/22/35 Brickkiln House, Holywell cum Needingworth (Reliability: 3).
Recorded as John Gray (M) Son b abt 1861 in St Ives, Huntingdonshire Age: 10 years
- [S10] 1891 UK Census, RG12/1241/55/21 Nicholas Lane, St Ives (Reliability: 3).
Recorded as GRAY, John (M) Head b abt 1860 in Needingworth, Huntingdonshire Occupation:Bricklayer Age: 31 years Married
- [S11] 1901 UK Census, RG13/1480/32/12 Melbourne Place, St Ives (Reliability: 3).
Recorded as GRAY, John (M) Head b abt 1859 in Needingworth, Huntingdonshire Occupation:Bricklayer's Labourer Age: 42 years Married
- [S243] Calculation from Max lifespan from own birthdate (Reliability: 2).
- [S4] Register of Marriages, Ely, Cambridgeshire Mar 1847 vol 14 page 99 (Reliability: 3).
- [S4] Register of Marriages, St. Ives, Huntingdonshire Dec 1880 vol 3b page 643 (Reliability: 3).
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