MH
Mary Holland — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Holland across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 5-person household.
Age 61
b. ~1879
Female
Spouse
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Holland |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1879 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Stephen Holland | Head | — | 72 | ~1868 |
| Edward Holland | Son | — | 18 | ~1922 |
| John Holland | Son | — | 22 | ~1918 |
| Walter Holland | Son | — | 30 | ~1910 |
| Mary Holland | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Cook, Illinois
Spouse, age 42
Cook, Illinois · implied b. ~1878 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Holland |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Year of Naturalization | 1900 |
| Birthplace (normalized) | england |
1930
Cook, Illinois
Spouse, age 52
Cook, Illinois · implied b. ~1878 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Holland |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Cook-County, Illinois
Spouse, age 61
Cook-County, Illinois · implied b. ~1879 — 5 household members
| Surname | Holland |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Holland across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Holland
Spouse · 1940 · age 61 · b. ~1879 · Illinois
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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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00935-00563)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bernard Hand | 36 | Head | Laborer | Illinois |
| 42 | Clysta Hand | 29 | Wife | — | Indiana |
| 43 | Bernard Jr. Hand | 6 | Son | — | Illinois |
| 44 | Mary Dolores Hand | 2 | Daughter | — | Illinois |
| 45 | Stephen Holland | 72 | Head | Switchman | Illinois |
| 46 | Mary E. Holland THIS PERSON | 61 | Wife | — | England |
| 47 | Walter Holland | 30 | Son | Laborer | Illinois |
| 48 | John Holland | 22 | Son | Packer | Illinois |
| 49 | Edward Holland | 18 | Son | — | Illinois |
| 50 | John Baillie | 58 | Head | File Clerk | Illinois |
| 51 | Jessie E. Baillie | 57 | Wife | — | Illinois |
| 52 | Esther Baillie | 25 | Daughter | Book Keeper | Illinois |
| 53 | Bedlington Matthias | 43 | Head | Roll Turner | Illinois |
| 54 | Katherine Matthias | 39 | Wife | — | Scotland |
| 55 | Peter Olson | 71 | Head | Carpenter | Sweden |
| 56 | Josephine Olson | 69 | Wife | — | Sweden |
| 57 | Ida Olson | 43 | Daughter | — | Illinois |
| 58 | Roy Olson | 41 | Son | Pattern Maker | Illinois |
| 59 | Edward Olson | 37 | Son | Electrician | Illinois |
| 60 | Newton O'Connor | 42 | Head | Locomotive Eng. | Illinois |
| 61 | Emma O'Connor | 39 | Wife | — | Illinois |
| 62 | Ethyl Mae O'Connor | 10 | Daughter | — | Illinois |
| 63 | Frank D. O'Connor | 45 | Head | Engineer | Illinois |
| 64 | Beatrice O'Connor | 42 | Wife | — | Illinois |
| 65 | Lois Ann O'Connor | 10 | Daughter | — | Illinois |
| 66 | Mary O'Connor | 80 | Mother | — | Illinois |
| 67 | John A. West | 55 | Head | Portable Eng. | Michigan |
| 68 | Mary West | 55 | Wife | — | Pennsylvania |
| 69 | Alvin West | 35 | Son | Portable Eng. | Illinois |
| 70 | Martha West | 34 | Daughter-in-law | — | Illinois |
| 71 | Nancy West | 8 | Granddaughter | — | Illinois |
| 72 | William Hansen | 24 | Son-in-law | Thomas Helper | Illinois |
| 73 | Vivienne Hansen | 19 | Daughter | — | Illinois |
| 74 | John W. Ryan | 48 | Head | Police Lieut. | Illinois |
| 75 | Myrtle M. Ryan | 42 | Wife | — | Illinois |
| 76 | Colette M. Ryan | 10 | Daughter | — | Illinois |
| 77 | Jean P. Ryan | 8 | Daughter | — | Illinois |
| 78 | Luke A. Harr | 64 | Head | Customers Man | Mississippi |
| 79 | Louise Harr | 61 | Wife | — | Illinois |
| 80 | Florence Harr | 37 | Daughter | Typist | Illinois |
Related Census Records
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)