GUY William, Head, 50 yrs, Clerk, not born in County of Middlesex (b abt 1789) (ages of adults were rounded down)
GUY Jane, 40, born in County of Middlesex (b abt 1801)
GUY Jane, 15, born Middlesex (b abt 1826)
GUY Maria, 15, born Middlesex (b abt 1826)
GUY Francis, 13, born Middlesex (b abt 1828)
GUY Emily, 10, born Middlesex (b abt 1831)
GUY Wm Walter, 9, born Middlesex (b abt 1832)
GUY Robert, 8, born Middlesex (b abt 1833)
GUY Eliza, 6, born Middlesex (b abt 1835)
GUY Mary, 3, born Middlesex (b abt 1838)
GUY Lucy, 1, born Middlesex (b abt 1840)
GRAY Maryann, 15, F S (Farm Servant), born Middlesex (b abt 1826)

1851 British Census [HO 107 Folio 1552 Piece 231]
Twelve members of the GUY family were living in the one household in the 1851 British Census taken 30/31 March.
Tower Hamlets, Borough of Stepney, Ecclesiastical Parish of St Philips, County of Middlesex .
Living at 12 Turner Street: To find Turner Street Stepney E1 on Streetmap.co.uk click here

GUY William, Head, Married, 61 yrs, Brewer's Clerk, born Sussex, Chichester (b abt 1790)
GUY Jane, Wife, 54, born Middlesex, Stepney (b abt 1797)
GUY Jane, Daughter, 25, born Middlesex, Stepney (b abt 1826)
GUY Maria, Daughter, 23, born Middlesex, Stepney (b abt 1828)
GUY Frances, Daughter, 21, born Middlesex, Stepney (b abt 1830)
GUY William, Son, 20, born Middlesex, Stepney (b abt 1831)
GUY Emily, Daughter, 19, born Middlesex, Stepney (b abt 1832)
GUY Robert, Son, 17, Clerk (Wool Merchant), born Middlesex, Stepney (b abt 1834)
GUY Eliza, Daughter, 13, born Middlesex, Stepney (b abt 1838)
GUY Mary, Daughter, 12, born Middlesex, Stepney (b abt 1839)
GUY Lucy, Daughter, 10, born Middlesex, Stepney (b abt 1841)
GUY Elizabeth, Sister, 63, born Sussex, Chichester (b abt 1788)

Census observations:
The house at 12 Turner Street must have been big house to accommodate the 12 people living there - all those adult children!
William GUY Snr and his maiden sister Elizabeth GUY were both born in Chichester Sussex.
Jane (ms YOUNG) was born in Stepney in MSX and so were all the children listed.
Jane would have been about 23 yrs of age in 1824 when the eldest child named in the Census was born.
We would be looking for the marriage of William GUY Snr to Jane YOUNG in the few years before 1824 most likely in MSX but maybe Chichester. In 1817 Wm would be aged 27, Jane aged 20. In 1823 Wm would be aged 33, Jane aged 26.
There is up to 3 yrs difference in census ages and known births/christenings of children.
At least 3 christenings (William, Emily, Robert) are still to be found, perhaps in Non-Conformist records.
Stepney Non-Conformist Church records searched for the birth of William Water Guy in 1988 without success: Bull Lane Independent 1644-1837, Coverly Fields, Mile End New Town Independent 1782-1831, Latimer Chapel, Bridge Street, Mile End Independent 1825-1837, Queen Street Meeting, Ratcliffe Independent 1698-1837, Sion Chapel, Union Street, Mile End Old Town 1791-1837, Wycliffe Chapel, Philpot Street, Commercial Road Independent 1785-1837.

In the 1851 census William Jnr has no Walter as his second name and perhaps it would be the same on his birth record.
William Walter GUY was the informant for the following certificates:
1857 birth of dau Emily which gave his birthplace as Chichester, Sussex, England
1861 birth of son Alfred which gave his birthplace as Sussex
1880 birth of dau Florence which gave birthplace as Sussex
His wife Isabella GUY ms HOCKEY was the informant for:
1867 birth of son Walter which gave her husband's native place as London, Middlesex, England
Son Walter was the informant for:
1917 death of William Walter which gave his father's birthplace as London, England
So on balance it seemed that William Walter GUY was born in Chichester, Sussex. However a researcher failed to find the birth of a William Walter GUY in any of the Chichester parishes or surrounding ones.

In Stepney there were nine hamlets/parishes. The county was known as Middlesex until 1890 when it became the new County of London. The Stepney parishes became part of the Metropolitan Boroughs in 1900 and in 1965 these boroughs became part of the new London Borough of Tower Hamlets.
East of London Family History Society has maps and history of Tower Hamlets. Most records are held at the London Metropolitan Archives, including the burial registers (1841-1966) for City of London and Tower Hamlets (also known as Bow Cemetery) Search Tower Hamlets BDMs (not complete)
Could look for a marriage of Robert GUY abt 1853 onwards, possibly in one of the many Stepney churches, and for the marriages of the sisters.
Can anyone find them in the 1861, 1871 or 1881 British Census?

Children of William GUY and Jane YOUNG:

1. Jane GUY b 9 Apr 1824, chr 6 May 1824 Stepney, Saint Dunstan, Middlesex, England d/o William GUY/Jane [IGI Batch Number C055762 extracted from parish records]

More information and photos of Saint Dunstan's Church, Middlesex

2. Maria GUY chr 28 Sep 1827 Stepney, Saint Dunstan, Middlesex, England d/o William GUY/Jane [IGI Batch Number C055762 extracted from parish records]

3. Frances GUY chr 28 Sep 1827 Stepney, Saint Dunstan, Middlesex, England d/o William GUY/Jane [IGI Batch Number C055762 extracted from parish records]

4. William Walter GUY born 16 Jul 1830 (day and month from GUY family birthday book, birth year from age on marriage certificate) at Chichester, Sussex, England (marriage certificate) or Middlesex (1851 Census)

In Stepney William GUY was a clerk in a law office. He sailed to Australia in 1852 and became a storekeeper on the goldfields near Ballarat, Victoria. We have no shipping record and according to a family story he worked his passage to Victoria as a galley hand, which is quite believable as he lived so close to the London Docks on the Thames.

Death 1917
William Walter GUY died 11 Mar 1917 aged 86 yrs Staffordshire Reef, Victoria, Australia, Father: William GUY, Brewer, Mother: Jane GUY formerly YOUNG. Cause of death was senile heart. Deceased was born London, England and had lived 65 years in Victoria. He was married at St Paul's Church, Geelong, age not known, to Isabella HOCKEY. Eleven children listed. Informant was Walter GUY, Son, Staffordshire Reef. Buried 12 Mar 1917 Staffordshire Reef Cemetery. [death cert 428, entry number 184]

Marriage 1855
William Walter GUY, Bachelor, Birthplace: Chichester, England, Occupation: Storekeeper, aged 25 years, Present and Usual Address: Woady Yallock, Father: William GUY, Brewer, Mother: Jane ms YOUNG, married 10 Dec 1855 St Paul's Church of England, La Trobe Terrace, Geelong, Victoria, by License according to the ceremonies of the Church of England, Isabella HOCKEY, Spinster, Birthplace: Launceston, Van Diemen's Land, aged 17 years, Father: Samuel HOCKEY, Storekeeper, Mother: Bridget ms BARFOOT. Both signed in the presence of witnesses Samuel HOCKEY and Eliza HOCKEY. [marr cert 3055, entry number 145]

Isabella HOCKEY b 1840 Launceston, Tasmania d/o Samuel HOCKEY and Bridget BARFOOT (no record of birth has been found)
Isabella GUY died 5 Oct 1904 aged 64 yrs Staffordshire Reef, Father: Samuel HOCKEY, Brickmaker, Mother: Bridget HOCKEY formerly BARFOOT. Deceased was born in Launceston, Tasmania and had lived 57 years in Victoria. She was married in Geelong, aged 16 years to William Walter GUY. Eleven children listed. Informant was William Samuel GUY, Son, Staffordshire Reef. Buried 8 Oct 1904 Staffordshire Reef Cemetery [death cert 14006, entry number 207]

Children of William Walter GUY and Isabella HOCKEY

5. Emily GUY b abt 1831 (not IGI)

6. Robert GUY b abt 1833 (not IGI)

7. Eliza GUY b 1 Oct 1835, chr 11 Nov 1835 Stepney, Saint George in the East, Middlesex, England [IGI Batch Number C055783 extracted from parish records]

8. Mary GUY b 27 Dec 1837, chr 15 Nov 1838 Stepney, Saint Phillip the Apostle, Middlesex, England d/o William GUY/Jane [IGI Batch Number C042691 extracted from parish records]

9. Lucy GUY chr 27 Oct 1843 Stepney, All Saints, Middlesex, England d/o William GUY/Jane [IGI Batch Number C042671 extracted from parish records]

10. Mary GUY (Marion) chr 27 Oct 1843 Stepney, All Saints, Middlesex, England d/o William GUY/Jane [IGI Batch Number C042671 extracted from parish records]

GUY family photos
We have six old photographs of GUY family members taken by Barnes and Son Photographers, Mile End Road. (poss taken abt 1860)
They are of William GUY Snr, his wife Jane GUY (ms YOUNG), Robert GUY (brother of William Walter), Robert's wife (unnamed) , Marion (Maria) GUY and Lucy GUY (sisters of William Walter).