In Tadcaster Cemetery, North Yorkshire. There's also a plaque dedicated to him in Tadcaster Parish Church.
www.iwm.org.uk/memorials/item/memorial/93122
www.iwm.org.uk/memorials/item/memorial/93122
MARIANNE
THE BELOVED WIFE OF
W. CALLUM, B.A.
FELL ASLEEP NOV. 17, 1910.
ALSO
HAROLD S. CALLUM, M.B.
ARMY SURGEON, AGED 31, SON OF THE ABOVE,
WHO LOST HIS LIFE IN THE BOER WAR,
APRIL 14, 1902.
THE BELOVED WIFE OF
W. CALLUM, B.A.
FELL ASLEEP NOV. 17, 1910.
ALSO
HAROLD S. CALLUM, M.B.
ARMY SURGEON, AGED 31, SON OF THE ABOVE,
WHO LOST HIS LIFE IN THE BOER WAR,
APRIL 14, 1902.