Baptised in St Marylebone a.1,2

Father - Edward Belfour
Mother - Catherine Mary

From the Oxford Dictionary of National Biography :-
"The eldest son of Edward Belfour of the Navy Office and Catherine Mary, daughter of John Greenwell, of the India House"

Died in Jamaica.2

ODNB.2

For more information see his entry in the online edition of the Oxford Dictionary of National Biography :-
Arthur H. Grant
"Belfour, Hugh John (1801/2-1827)", rev. John D. Haigh
Oxford Dictionary of National Biography, Oxford University Press, 2004
http://www.oxforddnb.org/article/1990
Online edition