ES
Ellen Sullivan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Silver-Bow-County, Montana
Our Model Tree links this Ellen Sullivan across the 1930 and 1940 US Censuses in Silver-Bow-County, Montana (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Silver-Bow-County, Montana |
| Surname | Sullivan |
| Given Name | Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Montana |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 3 |
| 1935 Residence | Same place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Township / Ward | Butte |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ellen | Age | Birth yr |
|---|---|---|---|---|
| Esther Sullivan | Daughter | — | 14 | ~1926 |
| Mary Sullivan | Daughter | — | 7 | ~1933 |
| David Sullivan | Son | — | 2 | ~1938 |
| Catherine Sullivan | Spouse | — | 31 | ~1909 |
| Catherine Sullivan | Daughter | — | 9 | ~1931 |
| Virginia Sullivan | Daughter | — | 3 | ~1937 |
| David Sullivan | Head | — | 36 | ~1904 |
| Ellen Sullivan | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Silver Bow, …
Daughter, age 1
Silver Bow, Montana · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Ellen T. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Montana |
| Mother's Birthplace | Montana |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Silver-Bow-County, Montana
Daughter, age 11
Silver-Bow-County, Montana · implied b. ~1929 — 8 household members
| Surname | Sullivan |
| Given Name | Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Montana |
| Income (1939) | 0 |
| Highest Grade | 3 |
| 1935 Residence | Same place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
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 Ellen Sullivan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ellen Sullivan
Daughter · 1940 · age 11 · b. ~1929 · Montana
★ You are viewing this record
Sibling
Esther Sullivan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Sullivan
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Sullivan
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Sullivan
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Sullivan
Sibling · 1940 · age 9
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 — Silver-Bow-County, Montana
Open full size
1940 US Federal Census — Silver-Bow-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02231-00223)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Grandpre | 73 | Head | — | Illinois |
| 2 | Victor Grandpre | 53 | Son | Collector | Kansas |
| 3 | Mary Sullivan | 39 | Head | Owner | Montana |
| 4 | Eileen Sullivan | 17 | Daughter | — | Montana |
| 5 | Timothy Sullivan | 16 | Son | — | Montana |
| 6 | David Sullivan | 16 | Son | — | Montana |
| 7 | John Sullivan | 9 | Son | — | Montana |
| 8 | Ellen Sullivan | 65 | Mother-in-law | — | Free State |
| 9 | Leslie Merriam | 33 | Head | Building Contractor | Canada |
| 10 | Helen Merriam | 31 | Wife | — | Wisconsin |
| 11 | Patrick F. O'Connor | 41 | Head | Book-Keeper | Montana |
| 12 | Helen Q. O'Connor | 40 | Wife | — | New York |
| 13 | William F. O'Connor | 11 | Son | — | Montana |
| 14 | Patricia Ann O'Connor | 10 | Daughter | — | Montana |
| 15 | Catherine M. O'Connor | 6 | Daughter | — | Montana |
| 16 | Walter E. Scott | 63 | Head | Boiler-Maker Helper | Virginia |
| 17 | Mary Ann Scott | 63 | Wife | — | Arkansas |
| 18 | Wallace Scott | 33 | Son | Social Service Worker | Montana |
| 19 | Adelbert Rodler | 39 | Head | Police Officer | Idaho |
| 20 | Helen Rodler | 35 | Wife | — | Montana |
| 21 | Bruce Rodler | 10 | Son | — | Montana |
| 22 | Susan Rodler | 5 | Daughter | — | Montana |
| 23 | Frances Harbison | 16 | Daughter | — | Montana |
| 24 | James Conroy | 7 | Ward | — | Montana |
| 25 | Fred Harvey | 43 | Head | Salesman | England |
| 26 | Gladys Harvey | 39 | Wife | — | Canada |
| 27 | John Harvey | 18 | Son | — | Montana |
| 28 | Anita Harvey | 12 | Daughter | — | Montana |
| 29 | James Hanrahan | 70 | Head | — | New York |
| 30 | Mathis Hanrahan | 52 | Wife | — | Germany |
| 31 | Frank Sitton | 24 | Son-in-law | Salesman | Montana |
| 32 | Lorraine Sitton | 22 | Daughter | — | Idaho |
| 33 | David J. Sullivan | 36 | Head | Contractor | Montana |
| 34 | Catherine Sullivan | 31 | Wife | — | Montana |
| 35 | Esther Sullivan | 14 | Daughter | — | Montana |
| 36 | Ellen Sullivan THIS PERSON | 11 | Daughter | — | Montana |
| 37 | Catherine Sullivan | 9 | Daughter | — | Montana |
| 38 | Mary Sullivan | 7 | Daughter | — | Montana |
| 39 | Virginia Sullivan | 3 | Daughter | — | Montana |
| 40 | David Sullivan | 2 | Son | — | Montana |
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)