I thought Martha looked familar - it seems an unfortunate choice of description though? "Inmate"!
1841 census: HO107/1095/6, folio 12, page 18
Sussex, Findon
Martha Brown, 50, Smith Mariam, 18, Smith Amelia, 16, Smith Emily, 12, Smith Frances Pelling, 12, Inmate Francis Pelling, 10, Inmate Henry Pelling, 8, Inmate