I Just found the following household in the 1841 census.
Piece: SCT1851/689 Place: Inveresk -Midlothian Enumeration District: 2
Civil Parish: Inveresk Ecclesiastical Parish, Village or Island: Inveresk
Folio: 755 Page: 43 Schedule: 182
Address: Smarts Wynd
Surname First name(s) Rel Status Sex Age Occupation Where Born Remarks
KNIGHT Robert Head M M 27 Canvass Weaver Midlothian - Leith
KNIGHT Euphemia Wife M F 24 Midlothian - Leith
KNIGHT Eliza Dau - F 3 Midlothian - Musselburgh
KNIGHT Margaret Dau - F 1 Midlothian - Leith
DAY Walter Nephew - M 12 Canvass Weaver Apprentice Midlothian - Leith
It certainly amused me
Russell