MC
Mary Cavanaugh — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ingham-County, Michigan
Our Model Tree links this Mary Cavanaugh across the 1920, 1930 and 1940 US Censuses in Ingham-County, Michigan (XGBoost, ~Confirmed), with identified parents James & James — first a daughter (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ingham-County, Michigan |
| Surname | Cavanaugh |
| Given Name | Mary C. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Lansing City |
| 1935 Residence (County) | Ingham |
| Additional Details | |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Lansing City |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| James Cavanaugh | Son | — | 26 | ~1914 |
| Mary Cavanaugh | Daughter | — | 21 | ~1919 |
| James Cavanaugh | Head | — | 53 | ~1887 |
| Suzanne Whitteer | Daughter | — | 15 | ~1925 |
| Mary Cavanaugh | Spouse | — | 48 | ~1892 |
| Elizabeth Cavanaugh | Daughter | — | 20 | ~1920 |
Census Appearances
1920
Ingham, Michigan
Daughter, age 1
Ingham, Michigan · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cavanaugh |
| Given Name | Mary C |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Ingham, Michigan
Daughter, age 11
Ingham, Michigan · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cavanaugh |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Ingham-County, Michigan
Daughter, age 21
Ingham-County, Michigan · implied b. ~1919 — 6 household members
| Surname | Cavanaugh |
| Given Name | Mary C. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Lansing City |
| 1935 Residence (County) | Ingham |
| Highest Grade | C 3 |
| 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 Cavanaugh across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Cavanaugh (~0.92 confidence) and father James Cavanaugh (~0.92 confidence) and mother Mary Cavanaugh (~0.92 confidence) and mother Ruby Cavanaugh (~0.92 confidence) and father James Cavanaugh (~0.92 confidence) and mother Mary Cavanaugh (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Cavanaugh
b. ~1886
Source father
● Household
· direct · ~0.92
Father
James Cavanaugh
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Mary Cavanaugh
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Ruby Cavanaugh
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
James Cavanaugh
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Mary Cavanaugh
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Cavanaugh
Daughter · 1940 · age 21 · b. ~1919 · Michigan
★ You are viewing this record
Sibling
Suzanne Whitteer
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Cavanaugh
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Cavanaugh
Sibling · 1940 · age 26
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 — Ingham-County, Michigan
Open full size
1940 US Federal Census — Ingham-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01761-00231)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Audrey Mackenzie | 10 | daughter | — | Michigan |
| 2 | Blair Wooster | 67 | head | Salesman | Michigan |
| 3 | Magdalene Wooster | 59 | wife | — | Michigan |
| 4 | Elizabeth Obrecht | 59 | sister-in-law | — | Michigan |
| 5 | Fred L. Olds | 63 | head | Field Buyer | Michigan |
| 6 | Fred O. Olds | 26 | son | Reporter | Michigan |
| 7 | William Newton | 33 | head | Asst Mgr | W. Virginia |
| 8 | Virginia Newton | 32 | wife | — | Ohio |
| 9 | Elizabeth Ann Newton | 2 | daughter | — | Michigan |
| 10 | Seymour Hilman | 29 | head | Research Ass'T | New York |
| 11 | Jean Hilman | 24 | wife | — | New York |
| 12 | Benjamin A. Bowler | 25 | head | Laborer | Indiana |
| 13 | Anna Bowler | 20 | wife | Stenographer | Indiana |
| 14 | May Blythe Axford | 29 | head | Teacher | Michigan |
| 15 | James B. Cavanaugh | 53 | head | Checker | Michigan |
| 16 | Mary L. Cavanaugh | 48 | wife | — | Michigan |
| 17 | James C. Cavanaugh | 26 | son | Clerk In Safety Division | Michigan |
| 18 | Mary C. Cavanaugh THIS PERSON | 21 | daughter | — | Michigan |
| 19 | Elizabeth J. Cavanaugh | 20 | daughter | — | Michigan |
| 20 | Suzanne Whitteer | 15 | daughter | — | Michigan |
| 21 | May Turner | 74 | head | — | Michigan |
| 22 | Arthur Turner | 45 | son | Teller | Michigan |
| 23 | Ruth Turner | 32 | daughter-in-law | Exec Office Sec | Washington |
| 24 | Frances Sauber | 31 | head | Teacher | Michigan |
| 25 | Evelyn Anderson | 30 | partner | Teacher | Michigan |
| 26 | William Hoyt | 54 | head | Plumber | Michigan |
| 27 | Josephine Hoyt | 54 | wife | Operator | Michigan |
| 28 | Edward Baker | 24 | head | Warehouse Mgr | Michigan |
| 29 | Emma Baker | 29 | sister | Saleswoman | Michigan |
| 30 | Helen Hanglaten | 28 | lodger | Nurse | Michigan |
| 31 | George Bahnet | 65 | head | — | Michigan |
| 32 | Stuart Swanton | 29 | head | Dentist | Michigan |
| 33 | Velma Swanton | 29 | wife | — | Tennessee |
| 34 | Clara B. Willison | 75 | head | — | Michigan |
| 35 | Charles R. Willison | 29 | son | Salesman | Michigan |
| 36 | Ann Dillman | 72 | sister-in-law | — | Michigan |
| 37 | Lloyd Serviss | 34 | head | Record Keeper | Michigan |
| 38 | Marie Serviss | 33 | wife | — | Michigan |
| 39 | Barbara Lee Serviss | 10 | daughter | — | Michigan |
| 40 | Bruce Serviss | 5 | son | — | Michigan |
Related Census Records
Pedigree Summary
Mary + 3 siblings
Gen 1 · 6 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)