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Mary Muller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Muller across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 5-person household.
Age 15
b. ~1925
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Muller |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Woburn City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Woburn City |
| Est. Birth Year | ~1925 |
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 |
|---|---|---|---|---|
| Margaret Muller | Spouse | — | 46 | ~1894 |
| Bartholomew Muller | Head | — | 51 | ~1889 |
| John Muller | Son | — | 17 | ~1923 |
| Mary Muller | Daughter | — | 15 | ~1925 |
| Bartholomew Muller | Son | — | 19 | ~1921 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 6
Middlesex, Massachusetts · implied b. ~1924 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Miller |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 15
Middlesex-County, Massachusetts · implied b. ~1925 — 5 household members
| Surname | Muller |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Woburn City |
| 1935 Residence (County) | Middlesex |
| Income (1939) | 0 |
| 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 Muller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Muller
Daughter · 1940 · age 15 · b. ~1925 · Massachusetts
★ You are viewing this record
Sibling
John Muller
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bartholomew Muller
Sibling · 1940 · age 19
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-t0627-01622-00708)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Blanche Burke | 26 | Wife | — | Massachusetts |
| 42 | Irene Burke | 9 | Daughter | — | Massachusetts |
| 43 | Beverly Burke | 3 | Daughter | — | Massachusetts |
| 44 | Ellen Burke | 1 | Daughter | — | Massachusetts |
| 45 | Mary T Flaherty | 67 | Head | — | Eire Ireland |
| 46 | Ann Flaherty | 45 | Daughter | Supervisor | Eire Ireland |
| 47 | Elizabeth Flaherty | 44 | Daughter | Bookkeeper | Massachusetts |
| 48 | Josephine Flaherty | 40 | Daughter | Janitor | Massachusetts |
| 49 | Catherine Flaherty | 26 | Daughter | — | Massachusetts |
| 50 | Helen Adams | 16 | State Ward | — | Massachusetts |
| 51 | Elizabeth Adams | 15 | State Ward | — | Massachusetts |
| 52 | Adeline Lemieux | 14 | State Ward | — | Massachusetts |
| 53 | Josephine Lemieux | 12 | State Ward | — | Massachusetts |
| 54 | Mary King | 9 | State Ward | — | Massachusetts |
| 55 | Alice Woods | 79 | Head | — | England |
| 56 | Catherine Campbell | 77 | Sister | — | England |
| 57 | Michael Powers | 68 | Head | Operator | Ireland |
| 58 | William Cronin | 37 | Son-in-law | Skilled Laborer | Massachusetts |
| 59 | Ann Cronin | 37 | Daughter | — | Massachusetts |
| 60 | Elizabeth Cronin | 5 | Granddaughter | — | Massachusetts |
| 61 | William Cronin | 4 | Son | — | Massachusetts |
| 62 | Eric Gallagher | 23 | Head | Laborer | Massachusetts |
| 63 | Marion Gallagher | 25 | Wife | — | Massachusetts |
| 64 | Walter Gallagher | 2 | Son | — | Massachusetts |
| 65 | Hilma Gallagher | 45 | Mother-in-law | Housework | Finland |
| 66 | Mina Lampinen | 82 | Mother | — | Finland |
| 67 | John Mcdevitt | 53 | Head | Truck Driver | Massachusetts |
| 68 | Alice Mcdevitt | 40 | Wife | — | Maine |
| 69 | Doris Mcdevitt | 15 | Daughter | — | Massachusetts |
| 70 | John Mcdevitt | 11 | Son | — | Massachusetts |
| 71 | Willie Pollins | 45 | Head | Laborer | South Carolina |
| 72 | Clara Pollins | 45 | Wife | — | Massachusetts |
| 73 | Bessie Burwell | 45 | Sister | Maid | Virginia |
| 74 | Marion Burwell | 34 | Sister | Maid | Massachusetts |
| 75 | Brother Harold | None | M | Leather Shop | — |
| 76 | Bartholomew Muller | 51 | Head | Robber | Massachusetts |
| 77 | Margaret Muller | 46 | Wife | — | Massachusetts |
| 78 | Bartholomew Muller | 19 | Son | — | Massachusetts |
| 79 | John Muller | 17 | Son | — | Massachusetts |
| 80 | Mary Muller THIS PERSON | 15 | Daughter | — | Massachusetts |
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)