There were more births for that family but looking at the 1841 census below it does not appear to be correct one.
RICHARDSON, WILLIAM BUSHEL
GRO Reference: 1838 D Quarter in HUNGERFORD UNION Volume 06 Page 173
RICHARDSON, SARAH ANN BUSHELL
GRO Reference: 1841 S Quarter in HUNGERFORD UNION Volume 06 Page 171
RICHARDSON, ELIZABETH BUSHILL
GRO Reference: 1843 D Quarter in HUNGERFORD UNION Volume 06 Page 192
RICHARDSON, LOUISA ANN BUSHELL
GRO Reference: 1845 M Quarter in HUNGERFORD UNION Volume 06 Page 231
1841?
https://www.familysearch.org/ark:/61903/1:1:M735-ZXWIn 1851 Thomas on the above census is a widower and only the two younger boys John & William are with him none of the later births above?
It may just be the birth was not registered.
Colin