Veronica Davies found that he was born on 4 Jul 1848 in Christchurch, Hants, confirm by the next item:

Her birth from FamilySearch:

father: Edward Pellew Davies
mother: Katharine Maria
Name Edward Davies
Gender Male
Christening Date 13 Aug 1848
Christening Place CHRISTCHURCH,HAMPSHIRE,ENGLAND
Birth Date 04 Jul 1848
Father's Name Edward Pellew Davies
Mother's Name Katharine Maria
Indexing Project (Batch) Number C14658-2
System Origin England-ODM
GS Film number 1041290
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In 1881 he was still a bank clerk but now in Clapham, unmarried and in lodgings:

Name Relation Condition Sex Age Birth Year Occupation  Disability  Where Born

PITCHER, George Head Married M 80 1801 Builder  Whyduncan, Norfolk
PITCHER, Jane Wife Married F 48 1833 Income By Letting Apartment
Wateringbury, Kent
LLOYD, Joe L Boarder Widower M 59 1822 Clerk Unemployed  Norwood, Surrey
DAVIES, Edward Lodger Single M 32 1849 Bank Clerk  Christchurch, Hampshire

RG number: RG11 Piece: 634 Folio: 109 Page: 15    

Registration District: Wandsworth Sub District: Clapham
EnumerationDistrict:  Ecclesiastical Parish:

Civil Parish: Clapham Municipal Borough:
Address: 5, Offerton Rd, Clapham
County: Surrey
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In 1891, sill a bank clerk but married, though with no wife in residence.

Name  Relation  Condition  Sex  Age  Birth Year  Occupation  Disability  Where Born

DAVIES, Edward Head Married M 42 1849  Bank Clerk  Christchurch, Hampshire
DAVIES, Bryan P Son M 5 1886 Scholar  Ealing, Middlesex
DAVIES, Katherine M Daughter F 4 1887    Ealing, Middlesex
DAVIES, Dorothy C Daughter F 3 1888    New Bushey, Hertfordshire
DAVIES, Ferrand B Son M 2 1889   Harrow, Middlesex
DEACON, Rose Servant Single F 18 1873 General Servant  Bath, Somersetshire
RAPLEY, Merle Servant Single F 19 1872 Nurse  Kirdford, Sussex

RG number: RG12 Piece: 1039 Folio: 39 Page: 18    

Registration District: Hendon Sub District: Harrow
EnumerationDistrict: 2 Ecclesiastical Parish: St Marys

Civil Parish: Harrow Municipal Borough:
Address: High Street, Harrow
County: Middlesex
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The 1901 census established that his wife was Caroline, born in 1860 in Southampton; he was then a bank manager and they had five children:

Name  Relation  Condition  Sex Age Birth Year  Occupation  Disability  Where Born

DAVIES, Edward Head Married M 52 1849  Bank Manager  Christchurch, Hampshire
DAVIES, Caroline Wife Married F 41 1860  Southampton, Hampshire
DAVIES, Bryan P Son Single M 15 1886   Ealing, Middlesex
DAVIES, Kathleen M Daughter F 14 1887  Ealing, Middlesex
DAVIES, Dorothy Caroline Daughter F 13  1888    Bushey, Hertfordshire
DAVIES, George E Son M 9 1892   Petworth, Sussex
DAVIES, Robert E Son M 4 1897   Petworth, Sussex
KEMPSTER, Alice Marian Governess Single F 25  1876   Governess  Bristol Clifton, Gloucestershire
RAPLEY, Merrill Servant Single F 28 1873 Nurse  Ebernoe, Sussex
BENTLEY, Annie M Servant Single F 30 1871  Cook  Tillington, Sussex
GREEST, Elizabeth Servant Single F 26 1875  Housemaid  Petersfield, Hampshire

RG number: RG13 Piece: 954 Folio: 49 Page: 7    

Registration District: Petworth Sub District: Petworth Southern
EnumerationDistrict: 4 Ecclesiastical Parish: Petworth St Mary

Civil Parish: Petworth Municipal Borough:
Address: Pound Street, Petworth
County: Sussex
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In 1911, there was the key information that they had been married for 26 years, by then he had retired and they were living in perhaps upmarket lodgings in Eastbourne:

Name  Relation  Condition/ Yrs married Sex Age Birth Year  Occupation  Where Born

DUTTON, Jane Head Widow F 78 1833  Boarding House Keeper  Brewood, Staffs
DUTTON, Ernest Alfred Son Married M 42 1869  Fishing Tackle Mfctr  Wolverhampton
DUTTON, Mary Howard Daughter In Law Married 15 years  F  44  1867  Kincardee, Stonehaven
DUTTON, Roderick John Grandson M 8 1903  Sussex, Eastbourne
DUTTON, Phyllis Eileen Granddaughter F 4  1907  Sussex, Eastbourne
SOUTAR, Katherine Boarder Single F 37 1874  Trained Nurse  Kincardine, Stonehaven
DAVIES, Edward Boarder Married M 62 1849 Retired Bank Manager  Hants, Christchurch
DAVIES, Caroline  Boarder  Married 26 years F  51  1860  Private Means  Hants, Southampton
DAVIES, Dorothy Caroline Boarder Single F 23  1888   Private Means  Essex, Watford
DAVIES, Robert Ernest Boarder Single M 14 1897  Indpendent  Sussex Petworth
DENCH, Emily Cook Single F 60 1851 Boarding House Cook  Sussex, Worth
KENNEDY, Bridget Housemaid Single F 36 1875  Housemaid Boarding House  Co Cork, King Williams Town
DIRKSE, Edward Johannes Waiter Single M 20 1891  Waiter Boarding House  Holland Resident

RG number: RG14 Piece: 4826
Reference: RG14PN4826 RG78PN208 RD71 SD2 ED14 SN309

Registration District: Eastbourne Sub District: Eastbourne
EnumerationDistrict: 14 Parish: Eastbourne

Address: London Hse Marine Parade Eastbourne  County: Sussex
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His death in Australia:

Surname Given Names Sex Age Father Mother Place of Birth egistration District Registration Number Registration Year
DAVIES EDWARD Male BLACKWOOD 20   1918
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It waqs almost impossible to identify her.  There were hundreds of Edward Davies marriages. In the 1911 census she said they had been married for 26 years so I searched for Edward Davies marrying a Caroline (1901 census) between 1884 and 1885 and got only this:

Surname First name(s) District Vol  Page
Marriages Sep 1884   (>99%)
Davies Edward Kensington 1a 67   
Mackey Caroline Kensington 1a 67

A confirmation will be if Caroline Mackey was born in Southmapton around 1859 to 1860 and this produced this result:

Surname First name(s) District Vol  Page
Births Sep 1859   (>99%)
MACKEY Caroline S Stoneham 2c 45
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