Possibilities from 1841:
Reference HO107, Piece 594, Book/Folio 3/38, Page 34
Calais, Ashby De La Zouche
Spencer, Thomas M 45 Butcher
Spencer, Elizabeth F 45
Spencer, John M 24 Tanner
Spencer, William M 22
Spencer, Edwin M 15
Spencer, Henry M 13
Spencer, Charles M 11
Spencer, Mark M 9
Spencer, Matthew M 7
Spencer, Luke M 5
Spencer, Elizabeth F 6 months all born in county
Also
Reference HO107, 594, 3/42, 42
Calais, Ashby De La Zouche
Spencer, John M 48 Butcher
Spencer, Catherine F 48
Spencer, Ann F 20
Spencer, John M 19 Butcher
Spencer, Henry M 15
Spencer, Joseph M 13
Spencer, Catherine F 10
Spencer, Eliza F 7 all born in county