MT
Mary Tierney — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this Mary Tierney across the 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed), with identified parents John & John — first a daughter (b.~1919), then head of a 10-person household.
Age 21
b. ~1919
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | Tierney |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul City |
| 1935 Residence (County) | Ramsey |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Lumber Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 236 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Stenographer |
| Township / Ward | St Paul City |
| Est. Birth Year | ~1919 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Theresa Tierney | Daughter | — | 12 | ~1928 |
| William Tierney | Son | — | 15 | ~1925 |
| Helen Tierney | Daughter | — | 13 | ~1927 |
| James Tierney | Son | — | 16 | ~1924 |
| Thomas Tierney | Other | — | — | |
| Mary Tierney | Daughter | — | 21 | ~1919 |
| John Tierney | Head | — | 48 | ~1892 |
| Charles Tierney | Son | — | 9 | ~1931 |
| Kathleen Tierney | Daughter | — | 19 | ~1921 |
| Rita Tierney | Daughter | — | 17 | ~1923 |
Census Appearances
1920
Ramsey, Minnesota
Daughter, age 1
Ramsey, Minnesota · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tierney |
| Given Name | Mary Ellen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Daughter, age 11
Ramsey, Minnesota · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tierney |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Daughter, age 21
Ramsey-County, Minnesota · implied b. ~1919 — 10 household members
| Surname | Tierney |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul City |
| 1935 Residence (County) | Ramsey |
| Occupation | Stenographer |
| Industry | Lumber Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 236 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Tierney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Tierney (~0.92 confidence) and father John Tierney (~0.92 confidence) and father John Tierney (~0.92 confidence) and mother Mary Tierney (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Tierney
b. ~1892
Source father
● Household
· direct · ~0.92
Father
John Tierney
b. ~1892
Source father
● Household
· direct · ~0.92
Father
John Tierney
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Mary Tierney
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Tierney
Daughter · 1940 · age 21 · b. ~1919 · Minnesota
★ You are viewing this record
Sibling
Theresa Tierney
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Tierney
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Tierney
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Tierney
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Tierney
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Tierney
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Tierney
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02002-00176)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Orville Young | 35 | Head | Salesman | Nebraska |
| 42 | Helen Young | 33 | Wife | — | Minnesota |
| 43 | Robert Young | 1 | Son | — | Minnesota |
| 44 | Sophie Peterson | 46 | Head | Saleswoman | Minnesota |
| 45 | Pearl Peterson | 47 | Sister | Teacher | Minnesota |
| 46 | Walter M. Harker | 59 | Head | Freight Agent | Iowa |
| 47 | Frances Harker | 51 | Wife | — | Wisconsin |
| 48 | Walter Harker | 24 | Son | New Worker | Minnesota |
| 49 | Raymond Mcmahon | 42 | Head | Bookkeeper | Minnesota |
| 50 | Ruth Mcmahon | 36 | Wife | — | Minnesota |
| 51 | Patrick Mcmahon | 11 | Son | — | Minnesota |
| 52 | Irene Dunn | 54 | Head | Principal | Minnesota |
| 53 | Hazel Nostegner | 41 | Head | Cost Accountant | Minnesota |
| 54 | Dorothy Nostegner | 21 | Daughter | New Worker | Minnesota |
| 55 | George F. Lynch | 63 | Head | Desk Clerk | Minnesota |
| 56 | Agnes Lynch | 63 | Wife | — | Minnesota |
| 57 | Lawrence Lunn | 30 | Head | Linotype Operator | Wisconsin |
| 58 | John Tierney | 48 | Head | Police Officer | Minnesota |
| 59 | Mary Ellen Tierney THIS PERSON | 21 | Daughter | Stenographer | Minnesota |
| 60 | Kathleen Tierney | 19 | Daughter | — | Minnesota |
| 61 | Rita Tierney | 17 | Daughter | Stenographer | Minnesota |
| 62 | James Tierney | 16 | Son | — | Minnesota |
| 63 | William Tierney | 15 | Son | — | Minnesota |
| 64 | Helen Ann Tierney | 13 | Daughter | — | Minnesota |
| 65 | Theresa Tierney | 12 | Daughter | — | Minnesota |
| 66 | Charles Tierney | 9 | Son | — | Minnesota |
| 67 | Thomas Tierney | None | Brother | — | — |
| 68 | Raymond Peiter | 39 | Head | Professor | Minnesota |
| 69 | Lorraine Peiter | 38 | Wife | — | Minnesota |
| 70 | William R. Peiter | 12 | Son | — | Minnesota |
| 71 | Mary Ann Peiter | 9 | Daughter | — | Minnesota |
| 72 | Ursula Peiter | 7 | Daughter | — | Minnesota |
| 73 | Thomas Peiter | 5 | Son | — | Minnesota |
| 74 | Lena Quigley | 25 | Maid | Housekeeper | Minnesota |
| 75 | Floyd H. Rose | 46 | Head | Salesman | Illinois |
| 76 | Alyce Rose | 49 | Wife | — | Minnesota |
| 77 | Floyd Rose | 21 | Son | — | Minnesota |
| 78 | Hendla Fenster | 78 | Head | — | Sweden |
| 79 | Mona Mckinley | 56 | Head | — | Minnesota |
| 80 | Delia Irish | 77 | Head | — | New York |
Related Census Records
Pedigree Summary
Mary + 7 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)