The birth of Arthur Ernest POUPARD was registered in Jul - Sep quarter of 1852 at East London, Middlesex Vol 1c, page 10 39

1861 Census
Household Members:
Charles Poupard 46 , commercial traveller, b ca 1815 in Wapping, Middlesex, England
Mary A E Poupard 41, Charles’ wife, b ca 1820 in Newington, Surrey, England
Charles G Poupard 21, clerk, unmarried son, b ca 1840 in Spitalfields, Middlesex, England
Mary A E Poupard 19, unmarried daughter, b ca 1842 in Spitalfields, Middlesex, England
John H Poupard 14, son, b ca 1847 in Spitalfields, Middlesex, England
Ann B Poupard 12, daughter, born ca 1849 in Spitalfields, Middlesex, England
Arthur E Poupard 8, son, born ca 1853 in City of London, England
Albert G Poupard 6, son, b ca 1855 in Bow, Middlesex, England
Wallace E Poupard 4, son, b ca 1857 in Bow, Middlesex, England
Ann Baylis 67, widowed mother-in-law, b ca 1794 in Stone Port, Worcestershire, England
Edith M Poupard 1, daughter, b ca 1860 in Bow, Middlesex, England
Civil Parish: Bow St Mary
Ecclesiastical parish: Bow
County/Island: Middlesex
Country: England
Registration district: Poplar
Sub-registration district: Bow
ED, institution, or vessel: 46
Household schedule number: 52
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1871 Census
Arthur Ernest Poupard, single, 19, clerk, born in London (tick in column for whether deaf & dumb, blind, imbecile or idiot, lunatic.) was a lodger in a house in Portland Rd, in All Saints parish in Kingston, Surrey. Others in the house were Emily Johnstone 25, Joseph Johnstone 32, Mary S Johnstone 34, William George Johnstone 1.73

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The first marriage of Arthur Ernest POUPARD was registered in Jul - Sep quarter of 1881 at Kings Lynn, Norfolk, Vol 4b, page 471 39

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1891 Census at 57 Richmond Park Rd., Kingston, Surrey, (ed 14, HS 27)
Arthur E Poupard 37, head of household, b ca 1854, bank cashier, born in Bow, London, England
Clara E Poupard 40, Arthur’s wife, b ca 1851 inLiverpool, Lancashire,
Daisy E Poupard 5, daughter, born ca 1886 in Leighton, Essex
Jane A Mitchell 35, servant, single, mother’s help domestic, born Marylebone, London
Frederick C Oldfield 31, visitor, single, Manager (woollen merchant), born Oxborough, Norfolk 8
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The marriage index shows that both Arthur E Poupard and Emily E Frewer were both married in 1910 with the registration in each case being in the Jul-Sep quarter in Brighton, East Sussex, Sussex, in Vol 2b page 435 39

Possible brother or cousin:
In 1901 census at 1 Queens Rd, Kingston on Thames, Surrey (Ed 17 HS 1):
M Poupard, 45, b ca 1856 in London, Head, married, male, living on own means,
E C Poupard, wife, 48 so b ca 1853 in Liverpool, Lancashire,
Daisy Poupard, 15, b ca 1886 in Leyton, Essex, single, daughter,
S Benson, nephew, 33, b ca 1868 in Derby, Melbourne, single male, Purser - Seas
Matilda Blunden, servant, 16, single, b ca 1885 in Binstead, Hampshire general domestic servant,