Possible
Edward Lloyd married Elizabeth Morgan 4 February 1824 at Newtown
Was about to suggest this. William, Edward and Elizabeth's youngest son on the census, was born in post-civil registration c.1842, and here are the possible birth certificates for him +/- 2 years in Newtown:
LLOYD, WILLIAM MORGANS
GRO Reference: 1842 M Quarter in NEWTOWN AND LLANIDLOES Volume 27 Page 141
LLOYD, WILLIAM SIER
GRO Reference: 1843 J Quarter in NEWTOWN AND LLANIDLOES Volume 27 Page 140
LLOYD, WILLIAM MORGANS
GRO Reference: 1843 S Quarter in NEWTOWN AND LLANIDLOES Volume 27 Page 122
Queenie
