I think the 'Rectory' ref depends on which site you use to find the census information
Ancestry
Civil Parish: St Marylebone
Ecclesiastical parish: St Thomas
County/Island: Middlesex
Country: England
Registration district: Marylebone
Sub-registration district: Rectory
ED, institution, or vessel: 7
Household schedule number: 155
Piece: 75
Folio: 15
Page Number: 25
FindMyPast
Parish Marylebone
City or borough Marylebone
Municipal ward Portman
Parliamentary borough Marylebone
Ecclesiastical district St Thomas
Registration district Marylebone
Enumeration district -
Archive reference RG09
Piece number 75
Folio number 15
Page number 25
family search
Sub-District 3 Rectory
Parish Marylebone
Ecclesiastical Parish St Thomas
Registration District Marylebone