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Mary Lynch — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cedar-County, Iowa
Our Model Tree links this Mary Lynch across the 1910, 1920, 1930 and 1940 US Censuses in Cedar-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1885), then head of a 11-person household.
Age 55
b. ~1885
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cedar-County, Iowa |
| Surname | Lynch |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Gower township |
| 1935 Residence (County) | Cedar |
| Additional Details | |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Gower Township |
| Est. Birth Year | ~1885 |
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 |
|---|---|---|---|---|
| Lucille Lynch | Daughter | — | 26 | ~1914 |
| Lorraine Lynch | Daughter | — | 12 | ~1928 |
| Maxine Lynch | Daughter | — | 16 | ~1924 |
| Kathleen Lynch | Daughter | — | 20 | ~1920 |
| Timothy Lynch | Head | — | 61 | ~1879 |
| Denis Lynch | Other | — | 54 | ~1886 |
| Raymond Lynch | Son | — | 10 | ~1930 |
| John Lynch | Son | — | 30 | ~1910 |
| Maurice Lynch | Son | — | 22 | ~1918 |
| Vincent Lynch | Son | — | 18 | ~1922 |
| Mary Lynch | Spouse | — | 55 | ~1885 |
Census Appearances
1910
Cedar, Iowa
Spouse, age 26
Cedar, Iowa · implied b. ~1884 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Margaret R |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Iowa |
| Years Married | 3 |
| Children Born | 2 |
| Children Living | 2 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Cedar, Iowa
Spouse, age 35
Cedar, Iowa · implied b. ~1885 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Margaret A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Cedar, Iowa
Other, age 45
Cedar, Iowa · implied b. ~1885 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Margaret |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cedar-County, Iowa
Spouse, age 55
Cedar-County, Iowa · implied b. ~1885 — 11 household members
| Surname | Lynch |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Gower township |
| 1935 Residence (County) | Cedar |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| 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 Lynch across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lynch
Spouse · 1940 · age 55 · b. ~1885 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cedar-County, Iowa
Open full size
1940 US Federal Census — Cedar-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01145-00863)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Timothy J. Lynch | 61 | Head | Farmer | Iowa |
| 2 | Mary Lynch THIS PERSON | 55 | Wife | — | Iowa |
| 3 | John Lynch | 30 | Son | Trucker | Iowa |
| 4 | Lucille Lynch | 26 | Daughter | School Teacher | Iowa |
| 5 | Maurice Lynch | 22 | Son | Farm Laborer | Iowa |
| 6 | Kathleen Lynch | 20 | Daughter | School Teacher | Iowa |
| 7 | Vincent Lynch | 18 | Son | Farm Laborer | Iowa |
| 8 | Maxine Lynch | 16 | Daughter | — | Iowa |
| 9 | Lorraine Lynch | 12 | Daughter | — | Iowa |
| 10 | Raymond Lynch | 10 | Son | — | Iowa |
| 11 | Denis Lynch | 54 | Brother | Farmer | Iowa |
| 12 | Fred Baker | 61 | Head | Farmer | Iowa |
| 13 | William Driscoll | 54 | Head | Farmer | Iowa |
| 14 | James Murphy | 46 | Head | Farmer | Iowa |
| 15 | Roy Glakeler|Glaekeler | 44 | Head | — | Iowa |
| 16 | Louise Glakeler|Glaekeler | 38 | Wife | — | Iowa |
| 17 | Bonita Glakeler|Glaekeler | 16 | Daughter | — | Iowa |
| 18 | Martha Glakeler|Glaekeler | 12 | Daughter | — | Iowa |
| 19 | Opal Glakeler|Glaekeler | 10 | Daughter | — | Iowa |
| 20 | Robert Glakeler|Glaekeler | 9 | Son | — | Iowa |
| 21 | Roy Junior Glakeler|Glaekeler | 7 | Son | — | Iowa |
| 22 | Isaac Williams | 70 | Head | — | Iowa |
| 23 | Harold Williams | 32 | Son | Farm Laborer | Iowa |
| 24 | Geo W. Williams | 59 | Head | — | Iowa |
| 25 | Iris Williams | 52 | Head | Farmer | Iowa |
| 26 | Ethel Williams | 33 | Wife | — | Iowa |
| 27 | Marjorie Williams | 16 | Daughter | Maid | Iowa |
| 28 | Betty Williams | 12 | Daughter | — | Iowa |
| 29 | Martin Williams | 9 | Son | — | Iowa |
| 30 | Bernice Williams | 8 | Daughter | — | Iowa |
| 31 | Theodore Williams | 6 | Son | — | Iowa |
| 32 | Isaac Williams | 73 | Nephew | Farm Laborer | Iowa |
| 33 | Frank Frick | 42 | Head | Laborer | Iowa |
| 34 | Mary Frick | 43 | Wife | — | Iowa |
| 35 | William Frick | 20 | Son | Laborer | Iowa |
| 36 | Pearl Frick | 16 | Daughter | — | Iowa |
| 37 | Neva Frick | 9 | Daughter | — | Iowa |
| 38 | Dorothy Frick | 7 | Daughter | — | Iowa |
| 39 | Marlon Frick | 3 | Daughter | — | Iowa |
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)