MA
Martha Allen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Rock-Island-County, Illinois
Our Model Tree links this Martha Allen across the 1920, 1930 and 1940 US Censuses in Rock-Island-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1865), then head of a 2-person household.
Age 75
b. ~1865
Female
Head
Born: Illinois
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-Island-County, Illinois |
| Surname | Allen |
| Given Name | Martha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Port Byron Village |
| 1935 Residence (County) | Rock Island |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Port Byron Village |
| Est. Birth Year | ~1865 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Martha Allen | Head | — | 75 | ~1865 |
| Flora Mikesell | Daughter | — | 57 | ~1883 |
Census Appearances
1920
Rock Island, …
Spouse, age 54
Rock Island, Illinois · implied b. ~1866 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allen |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Rock Island, …
Other, age 65
Rock Island, Illinois · implied b. ~1865 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allen |
| Given Name | Martha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 16 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Rock-Island-County, Illinois
Head, age 75
Rock-Island-County, Illinois · implied b. ~1865 — 2 household members
| Surname | Allen |
| Given Name | Martha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Port Byron Village |
| 1935 Residence (County) | Rock Island |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Martha Allen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Martha Allen
Head · 1940 · age 75 · b. ~1865 · Illinois
★ You are viewing this record
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
40 people indexed on this census page (nara:1940:m-t0627-00876-00019)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Jordan | 24 | Head | Plumbers Helper | Illinois |
| 42 | Sadie Jordan | 21 | Wife | — | Iowa |
| 43 | Henry Jordan | 28 | Head | Punch Press Op | Iowa |
| 44 | Margarette Jordan | 28 | Wife | — | Oklahoma |
| 45 | Jane B. Jordan | 1 | Daughter | — | — |
| 46 | Hans E. Thornbloom | 35 | Head | Stock Inspector | Illinois |
| 47 | Signe Thornbloom | 29 | Wife | — | Illinois |
| 48 | Jean R. Thornbloom | 5 | Daughter | — | — |
| 49 | Hans E. Jr. Thornbloom | 3 | Son | — | — |
| 50 | Janet A. Thornbloom | 1 | Daughter | — | — |
| 51 | Martha Allen THIS PERSON | 75 | Head | — | Illinois |
| 52 | Flora Mikesell | 57 | Daughter | — | Illinois |
| 53 | Beulah Lammarah | 32 | Head | Teacher | Nebraska |
| 54 | Gary Lammarah | 9 | Son | — | Illinois |
| 55 | Lanny Lammarah | 5 | Son | — | — |
| 56 | C. Vernon Ashdown | 35 | Head | Sub. Mail Carrier | Illinois |
| 57 | Georgia Ashdown | 34 | Wife | — | Illinois |
| 58 | Charles Ashdown | 4 | Son | — | — |
| 59 | Francis Lyford | 64 | Head | Farmer | Illinois |
| 60 | Edna Lyford | 58 | Wife | — | Illinois |
| 61 | Edward E. Schafer | 50 | Head | Tavern Operator | Illinois |
| 62 | Mabel S. Schafer | 49 | Wife | — | Illinois |
| 63 | Matthew H. Schafer | 30 | Son | Grocery Clerk | Illinois |
| 64 | Martha Schafer | 30 | Daughter-in-law | Cashier | Kansas |
| 65 | Homer J. Sell | 52 | Head | Printer | Illinois |
| 66 | Edith Sell | 52 | Wife | — | England |
| 67 | Annie Sell | 22 | Daughter | Apprentice | Ohio |
| 68 | Wade Spencer | 21 | Head | Laborer | Missouri |
| 69 | Esther Spencer | 19 | Wife | — | Michigan |
| 70 | Sharon Spencer | 1 | Daughter | — | — |
| 71 | O. Paul Moon | 28 | Head | Riveter | Iowa |
| 72 | Marguerite Moon | 28 | Wife | — | Iowa |
| 73 | Charles Smith | 25 | Head | Laborer | Iowa |
| 74 | Eleanor Smith | 21 | Wife | — | Iowa |
| 75 | Charlene Smith | 5 | Daughter | — | — |
| 76 | Patricia Smith | 3 | Daughter | — | — |
| 77 | Janet Smith | 1 | Daughter | — | — |
| 78 | Delos Stover | 31 | Head | Grinder Op | Iowa |
| 79 | Adelia Stover | 32 | Wife | — | Iowa |
| 80 | Delbert Stover | 12 | Son | — | 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)