Going to need more info to stand a chance of helping. Any clue where he would have been apart from the marriage in Windsor?
Accessing his marriage certificate would give his Father's name and occupation, that could help enormously, and may well have other relatives as witnesses.
GRO website -
www.gro.gov.uk gives possible births
TAYLOR, JOHN WILLIAM BARKER
GRO Reference: 1895 M Quarter in BAKEWELL Volume 07B Page 854
TAYLOR, JOHN WILLIAM DAVEY
GRO Reference: 1895 M Quarter in WORCESTER Volume 06C Page 305
TAYLOR, JOHN WILLIAM -
GRO Reference: 1895 M Quarter in OLDHAM Volume 08D Page 649
TAYLOR, JOHN WILLIAM HENDERSON
GRO Reference: 1895 M Quarter in SOUTH SHIELDS Volume 10A Page 790
TAYLOR, JOHN WILLIAM BUFTON
GRO Reference: 1895 M Quarter in ROTHERHAM Volume 09C Page 775
TAYLOR, JOHN WILLIAM SPENCER
GRO Reference: 1895 M Quarter in ASHBY DE-LA-ZOUCH Volume 07A Page 123
TAYLOR, JOHN WILLIAM SMITH
GRO Reference: 1895 M Quarter in KEIGHLEY Volume 09A Page 175
TAYLOR, JOHN WILLIAM HARVEY
GRO Reference: 1895 M Quarter in THE BURNLEY UNION Volume 08E Page 301
Do you know that his can't be any of those births? If so, how?