MF
Mary Fowler — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Mary Fowler across the 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 10-person household.
Age 21
b. ~1919
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Fowler |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Rockford city |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Occupation | Time keeper |
| Industry | Hinges, Locks |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 784 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Time Keeper |
| Township / Ward | Rockford 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Donna Fowler | Daughter | — | 4 | ~1936 |
| Mary Fowler | Daughter | — | 21 | ~1919 |
| Bernice Fowler | Daughter | — | 2 | ~1938 |
| Betty Fowler | Daughter | — | 14 | ~1926 |
| Matt Fowler | Head | — | 44 | ~1896 |
| Stanley Fowler | Son | — | 17 | ~1923 |
| Jack Fowler | Son | — | 15 | ~1925 |
| William Fowler | Son | — | 19 | ~1921 |
| Ronald Fowler | Son | — | 6 | ~1934 |
| Jean Fowler | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Winnebago, Illinois
Daughter, age 11
Winnebago, Illinois · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fowler |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Winnebago-County, Illinois
Daughter, age 21
Winnebago-County, Illinois · implied b. ~1919 — 10 household members
| Surname | Fowler |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Rockford city |
| 1935 Residence (County) | Winnebago |
| Occupation | Time keeper |
| Industry | Hinges, Locks |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 784 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 Fowler across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Fowler
Daughter · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Stanley Fowler
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ronald Fowler
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donna Fowler
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Fowler
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Fowler
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Fowler
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Fowler
Sibling · 1940 · age 2
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 — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00913-00944)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry Horne | 52 | Lodger | Pressing | Iowa |
| 2 | Lillie Horne | 54 | Lodger | Pressing | Iowa |
| 3 | John Davis | 24 | Head | Grinder | Iowa |
| 4 | Ruth Davis | 20 | Wife | — | Illinois |
| 5 | John Carlton Davis | 1 | Son | — | Illinois |
| 6 | Wallace Hull | 56 | Father in law | Laborer | Illinois |
| 7 | Maud Hull | 39 | Head | Seamstress | Illinois |
| 8 | Samuel Risenhower | 55 | Lodger | Radio Repair | Pennsylvania |
| 9 | Leroy Scheck | 37 | Head | Salesman | Pennsylvania |
| 10 | Dorothy Scheck | 28 | Wife | — | Illinois |
| 11 | Betty Jane Scheck | 12 | Daughter | — | Illinois |
| 12 | John Scheck | 11 | Son | — | Illinois |
| 13 | Vernon Scheck | 10 | Son | — | Illinois |
| 14 | Rosemary Lefevre | 11 | Daughter | — | Illinois |
| 15 | Rose Ann Lefevre | 11 | Daughter | — | Illinois |
| 16 | Jane D Scheck | 75 | Mother | — | Pennsylvania |
| 17 | Walter Saunders | 43 | Head | Carpenter | Illinois |
| 18 | Lydia Saunders | 32 | Wife | Feather | Illinois |
| 19 | Lois May Saunders | 15 | Daughter | — | Illinois |
| 20 | Richard Saunders | 88 | Father | — | Pennsylvania |
| 21 | Louis O Colloton | 36 | Head | Machinist | Illinois |
| 22 | Helen Colloton | 34 | Wife | Stenographer | Illinois |
| 23 | John Colloton | 6 | Son | — | Illinois |
| 24 | Marlene Colloton | 8 | Daughter | — | Illinois |
| 25 | Bertil Nelson | 27 | Head | Clerical | Michigan |
| 26 | Dorothy Nelson | 26 | Wife | — | Illinois |
| 27 | Joseph C Widmer | 56 | Head | General Office | Illinois |
| 28 | Flossie P Widmer | 51 | Wife | — | Illinois |
| 29 | Helen J Roddy | 23 | Daughter | Beauty Operator | Illinois |
| 30 | Sherryn L Roddy | 3 | Daughter | — | Illinois |
| 31 | Matt Fowler | 44 | Head | Machinist | Missouri |
| 32 | Jean Fowler | 42 | Wife | — | Missouri |
| 33 | William Fowler | 19 | Son | Inspector | Missouri |
| 34 | Stanley Fowler | 17 | Son | Threader | Missouri |
| 35 | Jack Fowler | 15 | Son | — | Missouri |
| 36 | Betty Fowler | 14 | Daughter | — | Missouri |
| 37 | Ronald Fowler | 6 | Son | — | Illinois |
| 38 | Donna Fowler | 4 | Daughter | — | Illinois |
| 39 | Bernice Fowler | 2 | Daughter | — | Illinois |
| 40 | Mary Fowler THIS PERSON | 21 | Daughter | Time Keeper | Missouri |
Related Census Records
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)