MW
Mary Watts — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pottawattamie-County, Iowa
Our Model Tree links this Mary Watts across the 1930 and 1940 US Censuses in Pottawattamie-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 8-person household.
Age 13
b. ~1927
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pottawattamie-County, Iowa |
| Surname | WATTS |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Council Bluffs City |
| 1935 Residence (County) | Pottawattamie |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Council Bluffs City |
| Est. Birth Year | ~1927 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Harry Watts | Son | — | 15 | ~1925 |
| Grover Watts | Head | — | 41 | ~1899 |
| Edward Watts | Son | — | 12 | ~1928 |
| Mary Watts | Daughter | — | 13 | ~1927 |
| Pauline Watts | Daughter | — | 9 | ~1931 |
| Charlene Watts | Daughter | — | 3 | ~1937 |
| Leslie Peary | Other | — | 11 | ~1929 |
| Blanche Watts | Spouse | — | 34 | ~1906 |
Census Appearances
1930
Pottawattamie, Iowa
Daughter, age 3
Pottawattamie, Iowa · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Watts |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | Missouri |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Daughter, age 13
Pottawattamie-County, Iowa · implied b. ~1927 — 8 household members
| Surname | WATTS |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Council Bluffs City |
| 1935 Residence (County) | Pottawattamie |
| Highest Grade | Hs 1 |
| 1935 Residence | Iowa |
| 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 Watts across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Watts
Daughter · 1940 · age 13 · b. ~1927 · Iowa
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Sibling
Harry Watts
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Watts
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Watts
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlene Watts
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Pottawattamie-County, Iowa
Open full size
1940 US Federal Census — Pottawattamie-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01199-00100)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Grace Whear | 53 | Wife | — | England |
| 2 | Frieda G. Whear | 32 | Daughter | Cream Taster | Iowa |
| 3 | Carolyn Whear | 17 | Daughter | Errand Girl | Iowa |
| 4 | Grover C. Watts | 41 | Head | Assistant Ice Foreman | Nebraska |
| 5 | Blanche Watts | 34 | Wife | — | Nebraska |
| 6 | Harry Watts | 15 | Son | — | Iowa |
| 7 | Mary Watts THIS PERSON | 13 | Daughter | — | Iowa |
| 8 | Edward Watts | 12 | Son | — | Iowa |
| 9 | Pauline Watts | 9 | Daughter | — | Iowa |
| 10 | Charlene Watts | 3 | Daughter | — | Iowa |
| 11 | Leslie Peary | 11 | Step-son | — | Illinois |
| 12 | Walter I. Scott | 22 | Head | Studio Pianist | Iowa |
| 13 | Martha B. Scott | 58 | Mother | — | Kansas |
| 15 | Maude Ross | 67 | Head | — | Nebraska |
| 16 | Louis W. Barry | 44 | Head | Supply Stockman | Nebraska |
| 17 | Mildred Barry | 37 | Wife | — | Nebraska |
| 18 | Thelma Barry | 17 | Daughter | — | Nebraska |
| 19 | Fern Barry | 15 | Daughter | — | Nebraska |
| 20 | Fred Barry | 13 | Son | — | Nebraska |
| 21 | Bryan Baldwin | 42 | Head | Storekeepers Helper | Nebraska |
| 22 | Lolita Baldwin | 41 | Wife | — | Nebraska |
| 23 | Fred Schultz | 53 | Head | Warehouse Superintendent | Nebraska |
| 24 | Hallie Schultz | 50 | Wife | — | Nebraska |
| 25 | Dorothy M. Reed | 18 | Step Daughter | New Worker | Iowa |
| 26 | Merrill L. Amen | 27 | Head | Transport Truck Driver | South Dakota |
| 27 | Evelyn S. Amen | 23 | Wife | — | Kansas |
| 28 | Shirley Rae Amen | 3 | Daughter | — | Iowa |
| 29 | Edwin G. Ellis | 73 | Head | — | Kansas |
| 30 | Nannie Ellis | 69 | Wife | — | Kansas |
| 31 | Harvey Rankin | 26 | Head | Deliveryman | Nebraska |
| 32 | Maxine Rankin | 24 | Wife | — | Iowa |
| 33 | Harvey Dale Rankin | 5 | Son | — | Nebraska |
| 34 | Sharron Rankin | 5 | Daughter | — | Nebraska |
| 35 | James W. Betts | 45 | Head | Laundry Washman | Missouri |
| 36 | Ruth H. Betts | 42 | Wife | — | Nebraska |
| 37 | James W. Jr. Betts | 19 | Son | Truck Driver | Nebraska |
| 38 | Betty Jane Betts | 16 | Daughter | New Worker | Nebraska |
| 39 | Charles Betts | 12 | Son | — | Iowa |
| 40 | Katheryn E. Betts | 6 | 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)