ME
Mary Ellis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Ellis across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Fred & Annie — first a daughter (b.~1916), then head of a 8-person household.
Age 24
b. ~1916
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Ellis |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Middlesex |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Middlesex |
| Est. Birth Year | ~1916 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Ann Ellis | Daughter | — | 22 | ~1918 |
| Rita Ellis | Daughter | — | 17 | ~1923 |
| Mary Ellis | Daughter | — | 24 | ~1916 |
| Fred Ellis | Head | — | 52 | ~1888 |
| Burned Ellis | Son | — | 26 | ~1914 |
| Timothy Ellis | Son | — | 20 | ~1920 |
| James Ellis | Son | — | 28 | ~1912 |
| Anna Ellis | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 3
Middlesex, Massachusetts · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ellis |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 13
Middlesex, Massachusetts · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ellis |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 24
Middlesex-County, Massachusetts · implied b. ~1916 — 8 household members
| Surname | Ellis |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Middlesex |
| 1935 Residence (County) | Middlesex |
| Highest Grade | H 2 |
| 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 Mary Ellis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Fred Ellis (~0.92 confidence) and mother Annie Ellis (~0.92 confidence) and mother Annie Ellis (~0.92 confidence) and father Fred Ellis (~0.92 confidence) and mother Anna Ellis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Ellis
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Annie Ellis
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Annie Ellis
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Fred Ellis
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Anna Ellis
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Ellis
Daughter · 1940 · age 24 · b. ~1916 · Massachusetts
★ You are viewing this record
Sibling
Ann Ellis
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Ellis
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Burned Ellis
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Timothy Ellis
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Ellis
Sibling · 1940 · age 28
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
39 people indexed on this census page (nara:1940:m-t0627-01614-00307)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 42 | Frank E Morris | 62 | Head | Engineer | Illinois |
| 43 | Edith V Morris | 56 | Wife | — | Michigan |
| 44 | John Q Morris | 20 | Son | Engineer | Oregon |
| 45 | Marcia @ Fulton | 42 | Head | Clerk | Massachusetts |
| 46 | Jane M Fulton | 12 | Daughter | — | Massachusetts |
| 47 | Graham B Fulton | 7 | Son | — | Massachusetts |
| 48 | Jessie Sansum | 67 | Aunt | — | Canada Eng |
| 49 | Marion Mercer | 41 | Lodger | Teller | Massachusetts |
| 50 | Donald J Macfaden | 39 | Head | Dyer | Massachusetts |
| 51 | Doris Macfaden | 33 | Daughter | — | Massachusetts |
| 52 | Donald R Macfaden | 9 | Son | — | Massachusetts |
| 53 | Arthur Gagnon | 16 | Lodger | — | New York |
| 54 | Fred B Ellis | 52 | Head | Laborer | Massachusetts |
| 55 | Anna M @ Ellis | 48 | Wife | — | Eire |
| 56 | James Ellis | 28 | Son | Operator | Massachusetts |
| 57 | Burned Ellis | 26 | Son | Chauffeur | Massachusetts |
| 58 | Mary Ellis THIS PERSON | 24 | Daughter | — | Massachusetts |
| 59 | Ann Ellis | 22 | Daughter | Tester | Massachusetts |
| 60 | Timothy Ellis | 20 | Son | Laborer | Massachusetts |
| 61 | Rita Ellis | 17 | Daughter | — | Massachusetts |
| 62 | Lois B @ Hamblen | 52 | Head | Seamstress | Massachusetts |
| 63 | Leslie Hamblen | 17 | Daughter | — | Massachusetts |
| 64 | Ella A @ Harty | 69 | Head | — | Canada Eng |
| 65 | Louise J Harty | 45 | Daughter | — | Canada Eng |
| 66 | Mary A @ Halloran | 65 | Head | — | Massachusetts |
| 67 | Catherine Halloran | 39 | Daughter | — | Massachusetts |
| 68 | Frances M Halloran | 32 | Daughter | Librarian | Massachusetts |
| 69 | Eleanor G Halloran | 30 | Daughter | Field Secretary | Massachusetts |
| 70 | Rita M Halloran | 24 | Daughter | Secretary | Massachusetts |
| 71 | Hazel Farhoy | 41 | Head | Beautician | New Hampshire |
| 72 | Mildred Farhoy | 23 | Daughter | Secretary | Massachusetts |
| 73 | Grace S @ Burrows | 47 | Head | Secretary | Illinois |
| 74 | Elizabeth Burrows | 19 | Daughter | Receptionist | Minnesota |
| 75 | James Burrows | 15 | Son | — | Minnesota |
| 76 | Helen E Bassett | 93 | Head | — | Massachusetts |
| 77 | Marion D Bassett | 62 | Daughter | Teacher | Massachusetts |
| 78 | Harriet A Ramsdell | 65 | Servant | Maid | Massachusetts |
| 79 | Frank C @ Vogel | 40 | Head | Salesman | Massachusetts |
| 80 | Scharlis Vogel | 34 | Wife | — | Massachusetts |
Related Census Records
Pedigree Summary
Mary + 5 siblings
Gen 1 · 5 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)