MK
Mary Kirby — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bristol-County, Massachusetts
Our Model Tree links this Mary Kirby across the 1930 and 1940 US Censuses in Bristol-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 8-person household.
Age 27
b. ~1913
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bristol-County, Massachusetts |
| Surname | Kirby |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Fall River |
| 1935 Residence (County) | Bristol |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Fall River |
| Est. Birth Year | ~1913 |
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 |
|---|---|---|---|---|
| James Wingate | Son | — | 7 | ~1933 |
| Arthur Wingate | Son | — | 9 | ~1931 |
| Mary Kirby | Daughter | — | 27 | ~1913 |
| Margaret Kirby | Spouse | — | 58 | ~1882 |
| Dorothy Kirby | Daughter | — | 23 | ~1917 |
| James Kirby | Head | — | 60 | ~1880 |
| Ruth Kirby | Daughter | — | 25 | ~1915 |
| Angela Wingate | Daughter | — | 38 | ~1902 |
Census Appearances
1930
Bristol, Massachusetts
Other, age 16
Bristol, Massachusetts · implied b. ~1914 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirby |
| Given Name | Mary B. |
| Relationship to Head | Step daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Bristol-County, Massachusetts
Daughter, age 27
Bristol-County, Massachusetts · implied b. ~1913 — 8 household members
| Surname | Kirby |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Fall River |
| 1935 Residence (County) | Bristol |
| Highest Grade | H 4 |
| 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 Kirby across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kirby
Daughter · 1940 · age 27 · b. ~1913 · Massachusetts
★ You are viewing this record
Sibling
Arthur Wingate
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Kirby
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Wingate
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Kirby
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Angela Wingate
Sibling · 1940 · age 38
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 — Bristol-County, Massachusetts
Open full size
1940 US Federal Census — Bristol-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01688-00784)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James J. Kirby | 60 | Head | Watchman | Massachusetts |
| 42 | Margaret M. Kirby | 58 | Wife | — | Massachusetts |
| 43 | Mary L. Kirby THIS PERSON | 27 | Daughter | — | Massachusetts |
| 44 | Ruth Kirby | 25 | Daughter | — | Massachusetts |
| 45 | Dorothy Kirby | 23 | Daughter | Secretary | Massachusetts |
| 46 | Angela K. Wingate | 38 | Daughter | Senior Typist | Massachusetts |
| 47 | Arthur K. Wingate | 9 | Son | — | Massachusetts |
| 48 | James Wingate | 7 | Son | — | Massachusetts |
| 49 | Mary L. Plant | 62 | Head | — | New York |
| 50 | Delavina Plant | 34 | Daughter | Clerk | Massachusetts |
| 51 | Edward J. Dugan | 25 | Head | Presser | Massachusetts |
| 52 | Jeanette Dugan | 27 | Wife | Cashier | Massachusetts |
| 53 | Daniel F. Horan | 40 | Head | Patrolman | Massachusetts |
| 54 | Mary V. Horan | 36 | Wife | — | Massachusetts |
| 55 | Daniel J. Jr. Horan | 15 | Son | — | Massachusetts |
| 56 | Wm. Horan | 14 | Son | — | Massachusetts |
| 57 | Phillip Brennan | 70 | Head | Barber | Massachusetts |
| 58 | Elizabeth Brennan | 66 | Wife | — | New York |
| 59 | Mary Oliveira | 41 | Head | Hatter | Massachusetts |
| 60 | Mary Oliveira | 21 | Daughter | Hatter | Massachusetts |
| 61 | Joseph X. Oliveira | 19 | Son | — | Massachusetts |
| 62 | Ernest Cooper | 54 | Head | Distributor | England |
| 63 | Elizabeth Cooper | 52 | Wife | — | England |
| 64 | Edith Mcgrath | 31 | Daughter | — | England |
| 65 | James Mcgrath | 7 | Grandson | — | Massachusetts |
| 66 | Ernest Mcgrath | 6 | Grandson | — | Massachusetts |
| 67 | James Sheehan | 73 | Head | — | Ireland |
| 68 | Mary Ann Sheehan | 74 | Wife | — | Ireland |
| 69 | Patrick Fahey | 66 | Brother | — | Massachusetts |
| 70 | Mary M. Fahey | 28 | Niece | Signature | Massachusetts |
| 71 | Isaac Durette | 47 | Head | Loomfixer | Canada |
| 72 | Isabella Durette | 42 | Wife | Saleslady | Massachusetts |
| 73 | Peter J. Durette | 19 | Son | Garage Counter | Massachusetts |
| 74 | Lorraine Durette | 18 | Daughter | Saleslady | Massachusetts |
| 75 | Robert Durette | 14 | Son | — | Massachusetts |
| 76 | Norman Durette | 12 | Son | — | Massachusetts |
| 77 | Herbert Emerson | 52 | Head | Molder | Hamilton |
| 78 | Winifred Emerson | 52 | Wife | — | Massachusetts |
| 79 | Gordon H. Emerson | 31 | Son | Electrician | Massachusetts |
| 80 | Daniel Fahey | 70 | Head | — | 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)