If John Gerrard married in 1843 to Jane Yeatman then this could be them on the 1851 census -
Ghon Garrod

Head 35 b. Beaminster Dorset, Carpenter
Jane Garrod Wife 30 b. Beaminster Dorset, Hat Maker
Richard Garrod son 3 b. Paddington
Henry T Garrod son 2 b. Paddington
Jane Garrod dau 1 Mo b. Paddington
Living at Praed St, St John's, Paddington HO107, Piece, 1467, Folio, 584; Page, 46
JJ