MC
Mary Connell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-County, Missouri
Our Model Tree links this Mary Connell across the 1930 and 1940 US Censuses in St.-Louis-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 8-person household.
Age 13
b. ~1927
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-County, Missouri |
| Surname | Connell |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis |
| 1935 Residence (County) | St. Louis |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Webster Groves |
| Est. Birth Year | ~1927 |
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 |
|---|---|---|---|---|
| John Connell | Son | — | 3 | ~1937 |
| John Connell | Head | — | 40 | ~1900 |
| Robert Connell | Son | — | 10 | ~1930 |
| Bertha Doyle | Other | — | 41 | ~1899 |
| Joyce Connell | Daughter | — | 8 | ~1932 |
| Gloria Connell | Daughter | — | 11 | ~1929 |
| Mary Connell | Daughter | — | 13 | ~1927 |
| Lucille Connell | Spouse | — | 37 | ~1903 |
Census Appearances
1930
St Louis, …
Daughter, age 3
St Louis, Missouri · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connell |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Kentucky |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-County, Missouri
Daughter, age 13
St.-Louis-County, Missouri · implied b. ~1927 — 8 household members
| Surname | Connell |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis |
| 1935 Residence (County) | St. Louis |
| Highest Grade | 6 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Connell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Connell
Daughter · 1940 · age 13 · b. ~1927 · Missouri
★ You are viewing this record
Sibling
John Connell
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joyce Connell
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gloria Connell
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Connell
Sibling · 1940 · age 10
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 — St.-Louis-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02150-00059)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Virginia Wier | 25 | Daughter | Secretary | Missouri |
| 42 | William F. Wier | 22 | Son | Attendant | Missouri |
| 43 | Elizabeth Wier | 16 | Daughter | — | Missouri |
| 44 | Edward Wier | 15 | Son | — | Missouri |
| 45 | Ann Wier | 13 | Daughter | — | Missouri |
| 46 | John J. Connell | 40 | Head | Proprietor | Missouri |
| 47 | Lucille M. Connell | 37 | Wife | — | Kentucky |
| 48 | Mary Jane Connell THIS PERSON | 13 | Daughter | — | Missouri |
| 49 | Gloria Ann Connell | 11 | Daughter | — | Missouri |
| 50 | Robert Connell | 10 | Son | — | Missouri |
| 51 | Joyce C. Connell | 8 | Daughter | — | Missouri |
| 52 | John O. Connell | 3 | Son | — | Missouri |
| 53 | Bertha Doyle | 41 | Servant | Maid | Missouri |
| 54 | Norman Basler | 34 | Head | Salesman | Missouri |
| 55 | Ethel Basler | 36 | Wife | — | Missouri |
| 56 | Donald Basler | 10 | Son | — | Missouri |
| 57 | Diane Basler | 4 | Daughter | — | Missouri |
| 58 | Mary Wagstaff | 53 | Mother-in-law | — | Missouri |
| 59 | Roselle Wagstaff | 30 | Sister-in-law | Comptometer Operator | Missouri |
| 60 | Louise Janis | 63 | Head | — | Missouri |
| 61 | M. Guy Hardin | 49 | Head | Accountant | Missouri |
| 62 | Mary Hardin | 45 | Wife | — | Missouri |
| 63 | Guy Hardin | 16 | Son | — | Missouri |
| 64 | Gerald Scofield | 44 | Head | Sales Manager | Illinois |
| 65 | Madelyn Scofield | 37 | Wife | — | Illinois |
| 66 | Gerald Scofield | 12 | Son | — | Missouri |
| 67 | Susanna Scofield | 5 | Daughter | — | Missouri |
| 68 | Grace Wilhelmy | 60 | Mother-in-law | — | Illinois |
| 69 | Fanny Walker | 37 | Servant | Maid | Mississippi |
| 70 | John E. Meyer | 48 | Head | Contractor | Illinois |
| 71 | Mildred Meyer | 45 | Wife | — | Missouri |
| 72 | Nancy L. Meyer | 16 | Daughter | — | Missouri |
| 73 | Louis C. Meyer | 15 | Son | — | Missouri |
| 74 | Ella May Sterling | 22 | Servant | Maid | Louisiana |
| 75 | Arthur C. Jones | 33 | Head | Wholesale Salesman | Missouri |
| 76 | Celia Jones | 28 | Wife | — | England |
| 77 | Elizabeth Jones | 1 | Daughter | — | Missouri |
| 78 | Lois Douglas | 21 | Servant | Maid | Missouri |
| 79 | Henry A. Miller | 47 | Head | Teacher | Nebraska |
| 80 | Naomi Miller | 43 | Wife | — | Missouri |
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)