MR
Mary Ross — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Mary Ross across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1868), then head of a 5-person household.
Age 72
b. ~1868
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Ross |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Saylor Township |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Saylor Township |
| Est. Birth Year | ~1868 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elsie Ross | Daughter | — | 27 | ~1913 |
| Eva Ross | Daughter | — | 40 | ~1900 |
| Andrew Ross | Head | — | 72 | ~1868 |
| Clarence Ross | Son | — | 42 | ~1898 |
| Mary Ross | Spouse | — | 72 | ~1868 |
Census Appearances
1920
Polk, Iowa
Spouse, age 51
Polk, Iowa · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ross |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Spouse, age 61
Polk, Iowa · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ross |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Spouse, age 72
Polk-County, Iowa · implied b. ~1868 — 5 household members
| Surname | Ross |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Saylor Township |
| 1935 Residence (County) | Polk |
| Class of Worker | 0 |
| 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 Ross across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Ross
Spouse · 1940 · age 72 · b. ~1868 · 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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01192-00691)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Francis Bachman | 28 | Head | Laborer | Iowa |
| 2 | Frank Bachman | 58 | Head | Waiter | Iowa |
| 3 | Cecelia Bachman | 57 | Wife | — | Iowa |
| 4 | Marylin Bachman | 3 | Daughter | — | Iowa |
| 5 | Barbara Bachman | 2 | Daughter | — | Iowa |
| 6 | Roland Bachman | 1 | Son | — | Iowa |
| 7 | Alexander Pritchard | 54 | Head | Laborer | Illinois |
| 8 | Maude Pritchard | 49 | Wife | — | Iowa |
| 9 | Rex Pritchard | 28 | Son | Farm Hand | Iowa |
| 10 | Frank Pritchard | 26 | Son | Laborer | Iowa |
| 11 | Lavonne Pritchard | 23 | Daughter | New Worker | Iowa |
| 12 | Paul Pritchard | 20 | Son | New Worker | Iowa |
| 13 | Katherine Pritchard | 18 | Daughter | New Worker | Iowa |
| 14 | Eleanor Pritchard | 15 | Daughter | — | Iowa |
| 15 | Andrew J. Ross | 72 | Head | Mechanic | Scotland |
| 16 | Mary Ross THIS PERSON | 72 | Wife | — | Iowa |
| 17 | Clarence Ross | 42 | Son | Mechanic | Iowa |
| 18 | Eva Ross | 40 | Daughter | Saleslady | Iowa |
| 19 | Elsie Ross | 27 | Daughter | Telegraph Operator | Iowa |
| 20 | Hattie Elliott | 69 | Head | — | Iowa |
| 21 | John Elliott | 53 | Son | Farm Hand | Iowa |
| 22 | Benjamin Kemper | 74 | Head | Operator | Iowa |
| 23 | Hort A. Slocum | 67 | Head | Truck Driver | Illinois |
| 24 | Ada Slocum | 54 | Wife | — | Illinois |
| 25 | Harold Slocum | 19 | Son | New Worker | Iowa |
| 26 | Miriam Schlegel | 26 | Head | Teacher | Iowa |
| 27 | Earl Faler | 39 | Head | Laborer | Iowa |
| 28 | Flossie Faler | 33 | Wife | — | Iowa |
| 29 | Waneta Faler | 11 | Daughter | — | Iowa |
| 30 | Everett Faler | 7 | Son | — | Iowa |
| 31 | Bonnie Faler | 5 | Daughter | — | Iowa |
| 32 | William Woods | 37 | Head | Laborer | Kansas |
| 33 | Berdine Woods | 28 | Wife | — | Iowa |
| 34 | Dora Woods | 4 | Daughter | — | Iowa |
| 35 | Sandra Woods | 1 | Daughter | — | Iowa |
| 36 | Roy Beancroft | 26 | Head | Salesman | Iowa |
| 37 | Roland Beancroft | 24 | Wife | — | Iowa |
| 38 | William Beancroft | 1 | Son | — | Iowa |
| 39 | William King | 42 | Head | Installer | Missouri |
| 40 | Arietta King | 36 | Wife | — | Missouri |
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)