MD
Mary Dunlap — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Rock-Island-County, Illinois
Our Model Tree links this Mary Dunlap across the 1920, 1930 and 1940 US Censuses in Rock-Island-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1881), then head of a 3-person household.
Age 59
b. ~1881
Female
Spouse
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-Island-County, Illinois |
| Surname | Dunlap |
| Given Name | Mary Ellen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Moline |
| 1935 Residence (County) | Rock Island |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Moline |
| Est. Birth Year | ~1881 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edward Dunlap | Son | — | 31 | ~1909 |
| Mary Dunlap | Spouse | — | 59 | ~1881 |
| William Dunlap | Head | — | 57 | ~1883 |
Census Appearances
1920
Rock Island, …
Spouse, age 38
Rock Island, Illinois · implied b. ~1882 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunlap |
| Given Name | Marie C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1907 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Year of Naturalization | 1908 |
| Birthplace (normalized) | scotland |
1930
Rock Island, …
Spouse, age 48
Rock Island, Illinois · implied b. ~1882 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunlap |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1908 |
| Age at First Marriage | 24 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Rock-Island-County, Illinois
Spouse, age 59
Rock-Island-County, Illinois · implied b. ~1881 — 3 household members
| Surname | Dunlap |
| Given Name | Mary Ellen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Moline |
| 1935 Residence (County) | Rock Island |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Dunlap across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Dunlap
Spouse · 1940 · age 59 · b. ~1881 · Illinois
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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 — Rock-Island-County, Illinois
Open full size
1940 US Federal Census — Rock-Island-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00875-00313)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Earl R. Goin | 26 | Head | Teletype Operator | Illinois |
| 42 | Lois Goin | 25 | Wife | — | Illinois |
| 43 | Earl Jr. Goin | 3 | Son | — | Illinois |
| 44 | William Dunlap | 57 | Head | Stone Mason | Scotland |
| 45 | Mary Ellen Dunlap THIS PERSON | 59 | Wife | — | Scotland |
| 46 | Edward Dunlap | 31 | Son | Drill Press | Canada |
| 47 | Leonard A. Carlson | 30 | Head | Ind. Engineer | Illinois |
| 48 | Dorothy Carlson | 30 | Wife | — | Illinois |
| 49 | Dorothy Louise Carlson | 7 | Daughter | — | Illinois |
| 50 | Suzanne Carlson | 6 | Daughter | — | Illinois |
| 51 | Daniel Mcclain | 31 | Head | Inspector | Illinois |
| 52 | Ida Mcclain | 35 | Wife | — | Illinois |
| 53 | Leila Lee Mcclain | 9 | Daughter | — | Illinois |
| 54 | Helena Shaenens | 76 | Head | Cleaning Lady | Belgium |
| 55 | Harry Marselus | 75 | Head | — | Illinois |
| 56 | Jessie Stewart | 37 | Head | Executive Secretary | Illinois |
| 57 | Loretta Stewart | 37 | Wife | — | Illinois |
| 58 | Austin Glest | 29 | Head | App. Tool Maker | Arkansas |
| 59 | Isabella Glest | 33 | Wife | — | Iowa |
| 60 | Donna Mae Glest | 7 | Daughter | — | Illinois |
| 61 | Mary Quisnet | 63 | Head | — | Iowa |
| 62 | Phyllis Quisnet | 23 | Son | Stenographer | Illinois |
| 63 | Katherine Noonan | 62 | Sister | — | Iowa |
| 64 | Hulda Edstrand | 66 | Head | — | Sweden |
| 65 | Marguerite Edstrand | 34 | Daughter | Beauty Operator | Illinois |
| 66 | Catherine Whitehead | 47 | Lodger | Seamstress | Missouri |
| 67 | Glenn Matucha | 25 | Head | Meat Cutter | Iowa |
| 68 | Madaleen Matucha | 21 | Wife | — | Iowa |
| 69 | Harry F. Stolting | 63 | Head | Draftsman | Kansas |
| 70 | Velma S. Stolting | 50 | Wife | — | Iowa |
| 71 | Louisa Stolting | 85 | Mother | — | Iowa |
| 72 | Clarence Dagnon | 28 | Head | Assembler | Indiana |
| 73 | Marie Dagnon | 28 | Wife | Nurse | Illinois |
| 74 | Godfred Carlson | 58 | Head | Sheet Metal Worker | Sweden |
| 75 | Ellen Carlson | 57 | Wife | — | Sweden |
| 76 | Oliver Carlson | 33 | Son | Office Worker | Illinois |
| 77 | Harry A. Leipold | 52 | Head | Locomotive Engineer | Illinois |
| 78 | Lillie A. Leipold | 57 | Wife | — | Illinois |
| 79 | Betty Lou Leipold | 13 | Daughter | — | Illinois |
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)