his birth name was Edward Percy Blake with father Herbert Percy Blake and hopefully that is what the marriage will say as being his father.
His father died in 1901 so maybe there was a reason although the son was named as Herbert on the 1891 census for Loughborough. Father Herbert was not present.
Hi Sandy - I know this is not what you are looking for but have you seen these baptism & birth entries for the Blake children?
Who was named as Edward's mother on his birth certificate and what was his father's occupation?
George Lorenzo &
Violet Lydia Anne BLAKE
Baptism 26 Feb 1880 Northampton, All Saints
Father:
Percy Blake,
painter Mother:
Ann, abode
Augustine StGeorge Lorenzo
CONDUIT mmn
BISHOP (Is this the correct birth entry?)
GRO Reference: 1873 D Quarter in NOTTINGHAM Volume 07B Page 255
Violet Lydia Anne BLAKE
mmn BROWNGRO Reference: 1879 J Quarter in NORTHAMPTON UNION Volume 03B Page 93
Lily BLAKEBaptism 22 Dec 1881 Northampton, All Saints
Father:
Percy Blake,
painter Mother:
Rose, abode
Augustine StLily BLAKE
mmn BROWNGRO Reference: 1882 M Quarter in NORTHAMPTON Volume 03B Page 89
Edward Percy &
Mabel BLAKE
age 14 monthsBaptism 5 Apr 1885 Northampton, All Saints,
Father:
Herbert Percy Blake,
painter Mother:
Rose Ellen, abode 10 Western St
Mabel BLAKE
mmn BROWNGRO Reference: 1884 M Quarter in NORTHAMPTON Volume 03B Page 96
The only 1885 birth entry on GRO indexes for
Edward Percy BLAKE
mmn BISHOP GRO Reference: 1885 M Quarter in NORTHAMPTON Volume 03B Page 107
Transcribed as
Perly BRAKE 
1901 Piece: 2977 Folio: 32 Page Number: 18
Lydia
GRINDLEY Head W 62 Nottingham
Percy
BLAKE son in law M 47 Birmingham
occ PainterRose dau M 45 Nottingham
Lydie 10 dau
George 4 son
This looks to be the birth entries for Lydia & George (his mn left blank)
BLAKE, GEORGE EDMUND PERCY
-GRO Reference: 1897 J Quarter in LOUGHBOROUGH Volume 07A Page 138 Occasional Copy: A
BLAKE, LYDIA
mmn BLAKE GRO Reference: 1890 S Quarter in NORTHAMPTON Volume 03B Page 98
and the 1881c
Piece: 1553 Folio: 41 Page Number: 35
Herbert Percy BLAKE 29 Birmingham,
occ painter & paper hangerRose 24 Nottingham
George Lorenzo 7 Nottingham
Violet Lydia Anne 2 All Saints, Northampton