This may be Henry's baptism at Clapham:
16 August 1785, Henry, son of Richard and Sarah Smith.
But the following burial entry exists:
9 November 1804, Henry Smith. [No age recorded in my source.]
Baptisms at Clapham of possible siblings:
2 April 1775, Elizabeth, daughter of Richard and Sarah Smith.
17 October 1779, Lydia, daughter of Richard and Sarah Smith.
3 August 1783, Esther, daughter of Richard and Sarah Smith.
9 March 1787, Jane, daughter of Richard and Sarah Smith.
13 June 1790, Amy, daughter of Richard and Sarah Smith.
20 January 1793, John, son of Richard and Sarah Smith.
Possible burial of Henry's mother:
26 November 1812, Sarah Smith. [No age recorded in my source.]
By the first decade of the 19th century at least two other Smith families are baptising children at Clapham. The fathers may be sons of Richard and Sarah.
HTH,
Stovepipe