MM
Mary Mcgee — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lucas-County, Iowa
Our Model Tree links this Mary Mcgee across the 1930 and 1940 US Censuses in Lucas-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 11-person household.
Age 20
b. ~1920
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lucas-County, Iowa |
| Surname | McGee |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Lucas |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Lincoln Township |
| Est. Birth Year | ~1920 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mildred Mcgee | Daughter | — | 14 | ~1926 |
| Marcella Mcgee | Daughter | — | 12 | ~1928 |
| Charles Mcgee | Son | — | 7 | ~1933 |
| John Mcgee | Head | — | 55 | ~1885 |
| Connie Mcgee | Son | — | 24 | ~1916 |
| Michael Mcgee | Son | — | 17 | ~1923 |
| Jerry Mcgee | Son | — | 9 | ~1931 |
| Mary Mcgee | Daughter | — | 20 | ~1920 |
| Thomas Mcgee | Son | — | 26 | ~1914 |
| Ray Mcgee | Son | — | 15 | ~1925 |
| Leora Mcgee | Spouse | — | 49 | ~1891 |
Census Appearances
1930
Lucas, Iowa
Daughter, age 10
Lucas, Iowa · implied b. ~1920 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGee |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Nebraska |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Lucas-County, Iowa
Daughter, age 20
Lucas-County, Iowa · implied b. ~1920 — 11 household members
| Surname | McGee |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Lucas |
| Highest Grade | Hs 4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Mcgee across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcgee
Daughter · 1940 · age 20 · b. ~1920 · Iowa
★ You are viewing this record
Sibling
Ray Mcgee
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mcgee
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mcgee
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Connie Mcgee
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Mcgee
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Mcgee
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerry Mcgee
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marcella Mcgee
Sibling · 1940 · age 12
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 — Lucas-County, Iowa
Open full size
1940 US Federal Census — Lucas-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01178-00642)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Vera E. | 36 | Wife | — | Iowa |
| 2 | Vera L. | 14 | Daughter | — | Iowa |
| 3 | Joyce King | 36 | Lodger | Teacher | Illinois |
| 4 | Louis Lepley | 53 | Head | Farmer | Iowa |
| 5 | Zellam Lepley | 49 | Wife | — | Iowa |
| 6 | Glen G. Lepley | 23 | Son | Farm Laborer | Iowa |
| 7 | Dorothy Lepley | 22 | Daughter in law | — | Iowa |
| 8 | Connie Lepley | 0 | Grand Daughter | — | Iowa |
| 9 | William Holliday | 60 | Head | Farmer | Iowa |
| 10 | Susan Holliday | 68 | Wife | — | Iowa |
| 11 | Carl Amos | 50 | Head | Farmer | Iowa |
| 12 | Roy Amos | 28 | Brother | Farmer | Iowa |
| 13 | Angelina Amos | 26 | Sister in law | — | North Dakota |
| 14 | Fred T. Amos | 5 | Nephew | — | Iowa |
| 15 | James C. Amos | 4 | Nephew | — | Iowa |
| 16 | Dolly A. Amos | 3 | Niece | — | Iowa |
| 17 | Clifford Amos | 0 | Nephew | — | Iowa |
| 18 | John C. Williamson | 62 | Head | Executive | Iowa |
| 19 | Anna C. Williamson | 62 | Wife | — | Iowa |
| 20 | John Mcgee | 55 | Head | Farmer | Iowa |
| 21 | Leora Mcgee | 49 | Wife | — | Iowa |
| 22 | Thomas T. Mcgee | 26 | Son | Trucker | Iowa |
| 23 | Connie C. Mcgee | 24 | Son | Farm Laborer | Iowa |
| 24 | Mary Mcgee THIS PERSON | 20 | Daughter | — | Iowa |
| 25 | Michael Mcgee | 17 | Son | Farm Laborer | Iowa |
| 26 | Ray Mcgee | 15 | Son | Farm Laborer | Iowa |
| 27 | Mildred Mcgee | 14 | Daughter | — | Iowa |
| 28 | Marcella Mcgee | 12 | Daughter | — | Iowa |
| 29 | Jerry Mcgee | 9 | Son | — | Iowa |
| 30 | Charles Mcgee | 7 | Son | — | Iowa |
| 31 | Frank Spencer | 50 | Head | Farmer | Iowa |
| 32 | Hattie Spencer | 45 | Wife | — | Iowa |
| 33 | Arthur Spencer | 23 | Son | Farm Laborer | Iowa |
| 34 | Francis Spencer | 18 | Daughter | — | Iowa |
| 35 | Guy L. Spencer | 10 | Son | — | Iowa |
| 36 | Hilma A. Webb | 43 | Head | Farmer | Iowa |
| 37 | Charles K. Webb | 18 | Son | Farm Laborer | Iowa |
| 38 | Donald R. Webb | 15 | Son | — | Iowa |
| 39 | Duane D. Webb | 13 | Son | — | Iowa |
| 40 | John R. Webb | 11 | Son | — | Iowa |
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)