MK
Mary Kelly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Kelly across the 1920, 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed), with identified parents William & Thos — first a spouse (b.~1907), then head of a 6-person household.
Age 33
b. ~1907
Female
Spouse
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Kelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Industry | H |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1907 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Kelly | Head | — | 36 | ~1904 |
| William Kelly | Other | — | 61 | ~1879 |
| Donald Kelly | Son | — | 9 | ~1931 |
| Richard Kelly | Son | — | 11 | ~1929 |
| James Kelly | Son | — | 7 | ~1933 |
| Mary Kelly | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Wayne, Michigan
Daughter, age 13
Wayne, Michigan · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Mary E |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Wayne, Michigan
Daughter, age 22
Wayne, Michigan · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Secretary |
| Industry | Machine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Spouse, age 33
Wayne-County, Michigan · implied b. ~1907 — 6 household members
| Surname | Kelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Industry | H |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Kelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Kelly (~0.92 confidence) and father Thos Kelly (~0.92 confidence) and mother Margaret Kelly (~0.92 confidence) and mother Margaret Kelly (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Kelly
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Thos Kelly
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Margaret Kelly
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Margaret Kelly
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Kelly
Spouse · 1940 · age 33 · b. ~1907 · Michigan
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01889-00614)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Juliette Wood | 27 | Wife | — | Canada-French |
| 2 | Martin Wood | 7 | Son | — | Michigan |
| 3 | Louis Laprise | 52 | Head | Decorator | Canada-French |
| 4 | Evelyn Laprise | 50 | Wife | — | Canada-French |
| 5 | Harvey Laprise | 23 | Son | Decorator | Michigan |
| 6 | Dorothy Laprise | 22 | Daughter | — | Kentucky |
| 7 | Larry D. Laprise | 0 | Son | — | Michigan |
| 8 | John Swanson | 48 | Head | Proprietor | Sweden |
| 9 | Florence Swanson | 41 | Wife | — | Michigan |
| 10 | Gloria Swanson | 17 | Daughter | — | Michigan |
| 11 | Judith Swanson | 4 | Daughter | — | Michigan |
| 12 | Lyman Mathewson | 36 | Head | Policeman | Illinois |
| 13 | Pearl Mathewson | 38 | Wife | — | Ohio |
| 14 | Delores Mathewson | 9 | Daughter | — | Michigan |
| 15 | Lyman Jr. Mathewson | 8 | Son | — | Michigan |
| 16 | Thomas Mccormick | 33 | Head | Stock Foreman | Michigan |
| 17 | Marie Mccormick | 33 | Wife | — | England |
| 18 | Tommy Mccormick | 5 | Son | — | Michigan |
| 19 | Mary Ann Mccormick | 1 | Daughter | — | Michigan |
| 20 | Ethel Mulhall | 60 | Mother-in-law | — | England |
| 21 | John Cushing | 35 | Head | Salesman | Michigan |
| 22 | Frances Cushing | 30 | Wife | — | Michigan |
| 23 | Lawrence Mollard | 24 | Brother-in-law | Laborer | Michigan |
| 24 | Norman H. Therams | 65 | Head | Shipping Clerk | Michigan |
| 25 | Nellie G. Therams | 59 | Wife | — | Michigan |
| 26 | Malcolm Molyneaux | 43 | Head | Fireman | Illinois |
| 27 | Lois Molyneaux | 31 | Wife | — | Michigan |
| 28 | Lavonne Molyneaux | 11 | Daughter | — | Michigan |
| 29 | Son Bates | 9 | Son | — | Michigan |
| 30 | James Bates | 4 | Son | — | Michigan |
| 31 | William Kelly | 36 | Head | Property Manager | Pennsylvania |
| 32 | Mary Kelly THIS PERSON | 33 | Wife | — | Michigan |
| 33 | Richard Kelly | 11 | Son | — | Michigan |
| 34 | Donald Kelly | 9 | Son | — | Michigan |
| 35 | James Kelly | 7 | Son | — | Michigan |
| 36 | William Sr. Kelly | 61 | Father | — | Pennsylvania |
| 37 | Rozelle Stuckel | 50 | Head | — | Pennsylvania |
| 38 | Winifred Stuckel | 43 | Wife | — | Michigan |
| 39 | Mary Ellen Stuckel | 20 | Daughter | — | Michigan |
| 40 | Frances Stuckel | 17 | Daughter | Stenographer | Michigan |
Pedigree Summary
Mary
Gen 1 · 4 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)