Albert can be seen in 1891 living at 5 Dart Street, Aston, Birmingham, Warwickshire England, lodging with a man named Richard Bird and his family:
Albert Knibbs Lodger 19 Stone Mason Birmingham
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Albert appears in the 1901 census for England and Wales living at 1 Albert Terrace, Herbert Road, Aston, Birmingham:
Albert Kribbs 29 Warwick Aston Birmingham Aston Stone Mason
Sarah Kribbs 30 Worcester Kings Heath Birmingham Aston
Albert Kribbs 2 Birmingham Birmingham Aston
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Albert and Sarah can be seenin 1911 living in Birmingham:
KNIBBS ALBERT M 1871 40
KNIBBS SARAH F 1871 40
KNIBBS ALBERT GEORGE M 1899 12

Sarah can be seen aged 10 years, living at Back Of 22 White Street, Kings Norton, Worcester, England in the 1881 census.

Mary Ann CHINN W Female 46 Northfield, Worcester, England Laundress
Richard CHINN Male 15 Kings Norton, Worcester, England
Sarah CHINN Female 10 Kings Norton, Worcester, England Scholar
Joseph CHINN Male 8 Kings Norton, Worcester, England Scholar
Louisa CHINN Female 6 Kings Norton, Worcester, England Scholar
Ellen CHINN Female 4 Kings Norton, Worcester, England Scholar

George Albert KNIBBS
Private
No: 27208
1st Battalion, Dorsetshire Regiment
killed in action on
Tuesday, 17th July 1917.
Age 19

Theatre of War: France & Flanders
Memorial: NIEWPOORT MEMORIAL, Nieuwpoort, West-Vlaanderen, Belgium
Panel No:

Additional Information: Son of Albert and Sarah Knibbs, of 1, Chapman Rd., Small Heath, Birmingham.
Born: Birmingham, Warwickshire
Enlisted: Birmingham

Whilst we won't know for sure precisely how or where Albert died, from the date of his death, my best guess is that he died at the beginning of the third major battle of Ypres, also known as the Battle of Passchendaele, which took place between July and November, 1917.