MD
Mary Dalton — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clinton-County, Iowa
Our Model Tree links this Mary Dalton across the 1920, 1930 and 1940 US Censuses in Clinton-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1873), then head of a 3-person household.
Age 67
b. ~1873
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Iowa |
| Surname | Dalton |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Clinton City |
| Est. Birth Year | ~1873 |
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 |
|---|---|---|---|---|
| George Dalton | Head | — | 67 | ~1873 |
| Mary Dalton | Spouse | — | 67 | ~1873 |
| Robert Dalton | Son | — | 26 | ~1914 |
Census Appearances
1920
Clinton, Iowa
Spouse, age 45
Clinton, Iowa · implied b. ~1875 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dalton |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Clinton, Iowa
Spouse, age 56
Clinton, Iowa · implied b. ~1874 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dalton |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 24 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Clinton-County, Iowa
Spouse, age 67
Clinton-County, Iowa · implied b. ~1873 — 3 household members
| Surname | Dalton |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Highest Grade | H 4 |
| 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 Dalton across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dalton
Spouse · 1940 · age 67 · b. ~1873 · Iowa
★ 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 — Clinton-County, Iowa
Open full size
1940 US Federal Census — Clinton-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01150-00554)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George John | 41 | Head | Baggageman | Iowa |
| 42 | Nellie John | 14 | Daughter | — | Iowa |
| 43 | W. J. Mcinerney | 32 | Head | Laborer | Iowa |
| 44 | Marie Mcinerney | 26 | Daughter | — | Wisconsin |
| 45 | Terrence Mcinerney | 10 | Son | Machine Operator | Minnesota |
| 46 | Thomas Mcinerney | 9 | Grandson | — | Iowa |
| 47 | Eugene Mcinerney | 4 | Grandson | — | Iowa |
| 48 | George Dalton | 67 | Head | — | Iowa |
| 49 | Mary Dalton THIS PERSON | 67 | Wife | — | Iowa |
| 50 | Robert Dalton | 26 | Son | — | Iowa |
| 51 | Florence Comstock | 50 | Head | Odd Jobs | Illinois |
| 52 | Martha Comstock | 49 | Daughter | Seamstress | Iowa |
| 53 | James O'Connell | 52 | Head | Laborer | Iowa |
| 54 | Della O'Connell | 51 | Wife | — | Iowa |
| 55 | Henry Gertz | 48 | Head | Machine Operator | Germany |
| 56 | Idal Gertz | 47 | Wife | — | Illinois |
| 57 | Herman Gertz | 81 | Father | — | Germany |
| 58 | Steve Beregs | 42 | Head | — | Hungary |
| 59 | Louis Beregs | 22 | Son | Shipping Clerk | Iowa |
| 60 | Steve Jr. Beregs | 18 | Son | — | Iowa |
| 61 | John Beregs | 15 | Son | — | Iowa |
| 62 | Julia Beregs | 70 | Mother | — | Hungary |
| 63 | Gertrude Shearer | 50 | Head | — | Iowa |
| 64 | Peter Bjornard | 49 | Head | Brakeman | Norway |
| 65 | Anna Bjornard | 48 | Wife | — | Germany |
| 66 | Edna Bjornard | 22 | Daughter | Stenographer | Iowa |
| 67 | Anthony Bjornard | 20 | Son | Laborer | Iowa |
| 68 | Joseph Bjornard | 18 | Son | — | Iowa |
| 69 | Peter Jr. Bjornard | 14 | Son | — | Iowa |
| 70 | Anna Bjornard | 11 | Daughter | — | Iowa |
| 71 | Jean Bjornard | 10 | Daughter | — | Iowa |
| 72 | Mary White | 50 | Head | — | Iowa |
| 73 | Thomas Mathew | 64 | Head | Laborer | Pennsylvania |
| 74 | John Mathew | 26 | Son | Truck Driver | Iowa |
| 75 | Margaret Mathew | 20 | Daughter | — | Iowa |
| 76 | Donald Mathew | 3 | Grandchild | — | Iowa |
| 77 | George Hall | 35 | Lodger | Laborer | England |
| 78 | Edna Hall | 34 | Lodger | — | Iowa |
| 79 | Edna Burt | 52 | Head | Laborer | Iowa |
| 80 | Dorothy Burt | 29 | 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)