RE
Ruth Ellis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Ruth Ellis across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 10-person household.
Age 14
b. ~1926
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Ellis |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Wilmington Town |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Wilmington Town |
| Est. Birth Year | ~1926 |
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 Ruth | Age | Birth yr |
|---|---|---|---|---|
| James Ellis | Son | — | 7 | ~1933 |
| Ruth Ellis | Daughter | — | 14 | ~1926 |
| Marie Ellis | Daughter | — | 16 | ~1924 |
| Paul Ellis | Son | — | 21 | ~1919 |
| Adeline Ellis | Spouse | — | 38 | ~1902 |
| Mary Ellis | Daughter | — | 4 | ~1936 |
| Teresa Ellis | Daughter | — | 2 | ~1938 |
| Irene Ellis | Daughter | — | 9 | ~1931 |
| Charles Ellis | Son | — | 24 | ~1916 |
| Charles Ellis | Head | — | 45 | ~1895 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 5
Middlesex, Massachusetts · implied b. ~1925 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ellis |
| Given Name | Ruth E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 14
Middlesex-County, Massachusetts · implied b. ~1926 — 10 household members
| Surname | Ellis |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Wilmington Town |
| 1935 Residence (County) | Middlesex |
| Class of Worker | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Ruth Ellis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ruth Ellis
Daughter · 1940 · age 14 · b. ~1926 · Massachusetts
★ You are viewing this record
Sibling
Mary Ellis
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Teresa Ellis
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Ellis
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Ellis
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Ellis
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Ellis
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Ellis
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01621-00585)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Burns | 12 | Ward | — | Vermont |
| 2 | John Burns | 11 | Ward | — | Massachusetts |
| 3 | Madeline Burns | 8 | Ward | — | Massachusetts |
| 4 | Raymond Burns | 7 | Ward | — | Massachusetts |
| 5 | Ernest R. Carter | 60 | Head | Salesman | Massachusetts |
| 6 | Sarah H. Carter | 63 | Wife | — | Massachusetts |
| 7 | Hannah Carter | 80 | Aunt | — | Massachusetts |
| 8 | Lila M. Taylor | 20 | Stepdaughter | — | Massachusetts |
| 9 | Larkin H. Drew | 53 | Head | Fireman | Massachusetts |
| 10 | Mabel M. Drew | 49 | Wife | — | New Hampshire |
| 11 | Ione M. Drew | 25 | Daughter | Office Clerk | Massachusetts |
| 12 | John L. Kristiansen | 54 | Head | Section Man | Norway |
| 13 | Bertha A. Kristiansen | 46 | Wife | — | Norway |
| 14 | John Denchy | 62 | Head | — | Pennsylvania |
| 15 | Annie Denchy | 69 | Wife | — | Pennsylvania |
| 16 | Harold Sullivan | 39 | Head | Truck Driver | Massachusetts |
| 17 | Ruth Sullivan | 35 | Wife | — | Massachusetts |
| 18 | Harold Jr. Sullivan | 8 | Son | — | Massachusetts |
| 19 | Ruth Sullivan | 4 | Daughter | — | Massachusetts |
| 20 | Walter C. Smith | 29 | Head | Acetile Operator | Massachusetts |
| 21 | Thelma B. Smith | 30 | Wife | — | Massachusetts |
| 22 | Norman Holland | 20 | Boarder | Tendent | Massachusetts |
| 23 | Constance Holland | 22 | Boarder | Check Teller | Massachusetts |
| 24 | Charles M. Ellis | 45 | Head | Truck Driver | North Carolina |
| 25 | Adeline C. Ellis | 38 | Wife | — | Massachusetts |
| 26 | Charles Jr. Ellis | 24 | Son | Iron Worker | Massachusetts |
| 27 | Paul Ellis | 21 | Son | Clerk | Massachusetts |
| 28 | Marie Ellis | 16 | Daughter | — | Massachusetts |
| 29 | Ruth Ellis THIS PERSON | 14 | Daughter | — | Massachusetts |
| 30 | Irene Ellis | 9 | Daughter | — | Massachusetts |
| 31 | James Ellis | 7 | Son | — | Massachusetts |
| 32 | Mary Ellis | 4 | Daughter | — | Massachusetts |
| 33 | Teresa Ellis | 2 | Daughter | — | Massachusetts |
| 34 | Mary B. Williams | 45 | Head | Bookkeeper | Maine |
| 35 | Gilbert T. Hill | 69 | Head | Night Watchman | New Hampshire |
| 36 | Philabena C. Hill | 65 | Wife | — | Maine |
| 37 | Virginia Hill | 20 | Daughter | — | Massachusetts |
| 38 | Allen D. Drew | 3 | Boarder | — | Massachusetts |
| 39 | Thomas P. Andrews | 60 | Head | Station Engineer | Massachusetts |
| 40 | Gertrude B. Andrews | 54 | Wife | — | New Hampshire |
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)