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Mary Bass — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boone-County, Iowa
Our Model Tree links this Mary Bass across the 1930 and 1940 US Censuses in Boone-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 6-person household.
Age 18
b. ~1922
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Iowa |
| Surname | Bass |
| Given Name | Mary E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Boone city |
| 1935 Residence (County) | Boone |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | S Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Boone City |
| Est. Birth Year | ~1922 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jack Bass | Son | — | 13 | ~1927 |
| Betty Bass | Daughter | — | 14 | ~1926 |
| Mary Bass | Daughter | — | 18 | ~1922 |
| Ella Bass | Spouse | — | 50 | ~1890 |
| Edward Bass | Head | — | 48 | ~1892 |
| Alice Bass | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Boone, Iowa
Daughter, age 9
Boone, Iowa · implied b. ~1921 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bass |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Boone-County, Iowa
Daughter, age 18
Boone-County, Iowa · implied b. ~1922 — 6 household members
| Surname | Bass |
| Given Name | Mary E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Boone city |
| 1935 Residence (County) | Boone |
| Class of Worker | 0 |
| Highest Grade | S Hs 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 Bass across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Bass
Daughter · 1940 · age 18 · b. ~1922 · Iowa
★ You are viewing this record
Sibling
Betty Bass
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Bass
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Bass
Sibling · 1940 · age 7
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 — Boone-County, Iowa
Open full size
1940 US Federal Census — Boone-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01141-00363)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Tommy G. Robertson | 1 | son | — | Iowa |
| 2 | Charles T. Baker | 71 | head | — | Indiana |
| 3 | Della M. Baker | 63 | wife | — | Iowa |
| 4 | Ervin L. Baker | 24 | son | Service Station Attendant | Iowa |
| 5 | Helen L. Baker | 20 | daughter | Stenographer | Iowa |
| 6 | Theodore F. Johnson | 57 | head | Switchman | Iowa |
| 7 | Elna N. Johnson | 55 | wife | — | Iowa |
| 8 | Maurine H. Johnson | 26 | daughter | Telephone Operator | Iowa |
| 9 | John E. Johnson | 15 | son | — | Iowa |
| 10 | Ralph L. Baker | 35 | head | Road Maintainer | Iowa |
| 11 | Nettie I. Baker | 31 | wife | — | Iowa |
| 12 | Luverne L. Baker | 10 | son | — | Iowa |
| 13 | Richard Godsell | 71 | head | — | Illinois |
| 14 | Vinnie J. Godsell | 63 | wife | — | Illinois |
| 15 | Thomas P. Hughes | 31 | son-in-law | Engine House Man | Missouri |
| 16 | Gladys I. Hughes | 26 | daughter | — | Iowa |
| 17 | Richard M. Hughes | 7 | grandson | — | Iowa |
| 18 | Gloria Jane Hughes | 5 | granddaughter | — | Iowa |
| 19 | Edward H. Godsell | 64 | brother | — | Illinois |
| 20 | Elinor R. Roe | 26 | Head | — | Iowa |
| 21 | Cullen R. Roe | 5 | son | — | Illinois |
| 22 | Edward Bass | 48 | head | Locomotive Service Man | Iowa |
| 23 | Ella L. Bass | 50 | wife | — | Iowa |
| 24 | Mary E. Bass THIS PERSON | 18 | daughter | — | Iowa |
| 25 | Betty J. Bass | 14 | daughter | — | Iowa |
| 26 | Jack Bass | 13 | son | — | Iowa |
| 27 | Alice L. Bass | 7 | daughter | — | Iowa |
| 28 | Clarence J. Fritz | 40 | head | Light Service Foreman | Iowa |
| 29 | Minnie Fritz | 42 | wife | — | Iowa |
| 30 | Gerald J. Fritz | 15 | son | — | Iowa |
| 31 | Harry P. Fritz | 5 | son | — | Iowa |
| 32 | Arthur L. Hall | 52 | head | Machinist Helper | Iowa |
| 33 | Leone C. Hall | 52 | wife | — | Iowa |
| 34 | Dorothy L. Hall | 21 | daughter | Legal Stenographer | Iowa |
| 35 | Marjorie E. Hall | 19 | daughter | New Worker | Iowa |
| 36 | Virginia E. Hall | 17 | daughter | — | Iowa |
| 37 | John R. Wenzel | 39 | head | Bridge Carpenter | Missouri |
| 38 | Josephine A. Wenzel | 36 | wife | — | Iowa |
| 39 | Joyce L. Wenzel | 14 | daughter | — | Iowa |
| 40 | Joan Wenzel | 10 | 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)