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Mary Logan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Pennsylvania
Our Model Tree links this Mary Logan across the 1930 and 1940 US Censuses in Montgomery-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1899), then head of a 9-person household.
Age 41
b. ~1899
Female
Spouse
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Pennsylvania |
| Surname | Logan |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Wyncote |
| 1935 Residence (County) | Montgomery |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
| Township / Ward | Wyncote |
| Est. Birth Year | ~1899 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eileen Logan | Daughter | — | 6 | ~1934 |
| Mary Logan | Daughter | — | 14 | ~1926 |
| Joseph Logan | Head | — | 41 | ~1899 |
| M Logan | Son | — | 9 | ~1931 |
| William Logan | Son | — | 8 | ~1932 |
| John Logan | Son | — | 11 | ~1929 |
| Joseph Logan | Son | — | 16 | ~1924 |
| Thomas Logan | Son | — | 13 | ~1927 |
| Mary Logan | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Philadelphia, Pennsylvania
Other, age 32
Philadelphia, Pennsylvania · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Logan |
| Given Name | Margaret |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1916 |
| Age at First Marriage | 29 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birthplace (normalized) | irish free state |
1940
Montgomery-County, Pennsylvania
Spouse, age 41
Montgomery-County, Pennsylvania · implied b. ~1899 — 9 household members
| Surname | Logan |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Wyncote |
| 1935 Residence (County) | Montgomery |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Logan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Logan
Spouse · 1940 · age 41 · b. ~1899 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Montgomery-County, Pennsylvania
Open full size
1940 US Federal Census — Montgomery-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03577-00506)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elizabeth B. Murray | 36 | wife | — | Penna. |
| 42 | Betty Jean Murray | 7 | daughter | — | Penna. |
| 43 | John Jr. Murray | 4 | son | — | Penna. |
| 44 | Anne Leonard | 25 | servant | Maid | Penna. |
| 45 | Anna Wales | 26 | servant | Maid | Penna. |
| 46 | Paul E. Sigmund | 47 | Head | Civil Engineer | Penna. |
| 47 | Marie R. Sigmund | 34 | wife | — | New York |
| 48 | Paul E. Jr. Sigmund | 11 | son | — | Penna. |
| 49 | Peter R. Sigmund | 10 | son | — | New Jersey |
| 50 | Mary Ann Sigmund | 8 | daughter | — | Germany |
| 51 | John F. Sigmund | 3 | son | — | Penna. |
| 52 | M. Louise Sigmund | 1 | daughter | — | Penna. |
| 53 | Ida Hagen | 22 | servant | Maid | Penna. |
| 54 | Edward J. Doyle | 49 | Head | Salesman | Penna. |
| 55 | Marie A. Doyle | 44 | wife | — | Penna. |
| 56 | Frances Nowaczyk | 60 | Head | — | Penna. |
| 57 | Gertrude Nowaczyk | 30 | daughter | Stenographer | Penna. |
| 58 | Irene Nowaczyk | 28 | daughter | Waitress | Penna. |
| 59 | Thomas Bracken | 23 | Head | — | England |
| 60 | Marie A. Bracken | 69 | wife | — | France |
| 61 | Annie M. Simpson | 73 | Head | — | Penna. |
| 62 | Eleanor Simpson | 50 | daughter | — | Penna. |
| 63 | Richard Berbold | 11 | boarder | — | Penna. |
| 64 | Walter Zimmerman | 47 | lodger | Gardner | Arkansas |
| 65 | Patrick J. Ahern | 57 | Head | Gardner | Irish Free State |
| 66 | Annie Ahern | 60 | wife | — | Irish Free State |
| 67 | Marie Ahern | 26 | daughter | Saleslady | Penna. |
| 68 | James Ahern | 25 | son | Laborer | Penna. |
| 69 | Daniel Ahern | 23 | son | Sub. Clerk | Penna. |
| 70 | John Ahern | 76 | brother | — | Irish Free State |
| 71 | Anna Carter | 53 | Head | — | Penna. |
| 72 | Joseph Logan | 41 | Head | Contractor | Irish Free State |
| 73 | Mary Logan THIS PERSON | 41 | wife | — | Irish Free State |
| 74 | Joseph J. Logan | 16 | son | — | Penna. |
| 75 | Mary R. Logan | 14 | daughter | — | Penna. |
| 76 | Thomas Logan | 13 | son | — | Penna. |
| 77 | John Logan | 11 | son | — | Penna. |
| 78 | M. Calvin Logan | 9 | son | — | Penna. |
| 79 | William Logan | 8 | son | — | Penna. |
| 80 | Eileen Logan | 6 | daughter | — | Penna. |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)