WD
William Davidson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Arapahoe-County, Colorado
Our Model Tree links this William Davidson across the 1910, 1920, 1930 and 1940 US Censuses in Arapahoe-County, Colorado (XGBoost, ~Confirmed), with identified parents William & Theresa — first a head (b.~1903), then head of a 4-person household.
Age 37
b. ~1903
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Arapahoe-County, Colorado |
| Surname | Davidson |
| Given Name | William B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | South Precinct #39 |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 58 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Farmer |
| Township / Ward | South Precinct 39 |
| Est. Birth Year | ~1903 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Margery Davidson | Daughter | — | 3 | ~1937 |
| William Davidson | Head | — | 37 | ~1903 |
| Howard Davidson | Son | — | 8 | ~1932 |
| Gladys Davidson | Spouse | — | 30 | ~1910 |
Census Appearances
1910
Arapahoe, Colorado
Son, age 7
Arapahoe, Colorado · implied b. ~1903 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | William B Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Michigan |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1920
Arapahoe, Colorado
Son, age 17
Arapahoe, Colorado · implied b. ~1903 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | William G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Arapahoe, Colorado
Son, age 27
Arapahoe, Colorado · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Michigan |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Arapahoe-County, Colorado
Head, age 37
Arapahoe-County, Colorado · implied b. ~1903 — 4 household members
| Surname | Davidson |
| Given Name | William B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | South Precinct #39 |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 58 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 William Davidson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Davidson (~0.92 confidence) and mother Theresa Davidson (~0.92 confidence) and mother Theresa Davidson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Davidson
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Theresa Davidson
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Theresa Davidson
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Davidson
Head · 1940 · age 37 · b. ~1903 · Colorado
★ 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 — Arapahoe-County, Colorado
Open full size
1940 US Federal Census — Arapahoe-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00455-00908)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lloyd L. Brownell | 0 | Son | — | Colorado |
| 42 | Amos E. R. Brink | 30 | Head | Farmer | Missouri |
| 43 | Rose E. Brink | 26 | Wife | — | Illinois |
| 44 | Kenneth A. Brink | 2 | Son | — | Colorado |
| 45 | Charles R. Cassell | 14 | Lodger | — | Colorado |
| 46 | John E. Denner | 28 | Head | Farmer | Colorado |
| 47 | Floyd H. Milnor | 49 | Head | Farmer | Ohio |
| 48 | Jean L. Milnor | 48 | Wife | — | Colorado |
| 49 | Dorothy J. Milnor | 21 | Daughter | — | Colorado |
| 50 | Helen K. Milnor | 16 | Daughter | — | Colorado |
| 51 | Matrona J. Milnor | 70 | Mother | — | Ohio |
| 52 | John L. Love | 83 | Father-in-law | — | Northern Ireland |
| 53 | Anton B. Gongwer | 24 | Hired hand | Farm Hand | Kansas |
| 54 | Theresa Davidson | 68 | Head | — | Michigan |
| 55 | Joseph F. Davidson | 35 | Son | Farmer | Colorado |
| 56 | Gertrude H. Davidson | 35 | Daughter-in-law | — | Colorado |
| 57 | Sherman T. Barnes | 24 | Hired hand | Farm Hand | Kansas |
| 58 | William B. Davidson THIS PERSON | 37 | Head | Farmer | Colorado |
| 59 | Gladys E. Davidson | 30 | Wife | — | Missouri |
| 60 | Howard W. Davidson | 8 | Son | — | Colorado |
| 61 | Margery A. Davidson | 3 | Daughter | — | Colorado |
| 62 | Robert A. James | 55 | Head | Farmer | Missouri |
| 63 | Minnie A. Hubbs | 64 | Partner | — | Illinois |
| 64 | Melvin L. Gordon | 43 | Head | Farmer | Nebraska |
| 65 | Maude M. Gordon | 41 | Wife | — | Kansas |
| 66 | Keith M. Gordon | 18 | Son | — | Colorado |
| 67 | Raymond L. Gordon | 17 | Son | — | Colorado |
| 68 | Orlie L. Gordon | 14 | Son | — | Colorado |
| 69 | Alice M. Gordon | 10 | Daughter | — | Colorado |
| 70 | Loren D. Gordon | 6 | Son | — | Colorado |
| 71 | Thomas E. Love | 51 | Head | Farmer | Colorado |
| 72 | Edith Love | 50 | Wife | — | Ohio |
| 73 | Charles J. Convery | 42 | Head | Farm Hand | Pennsylvania |
| 74 | Lorraine Convery | 43 | Wife | — | Texas |
| 75 | Dorothy Westfall | 12 | Daughter | — | Colorado |
| 76 | Claude E. Preston | 50 | Head | Farmer | Michigan |
| 77 | Lillian P. Preston | 39 | Wife | — | Kansas |
| 78 | Hilda E. Carlson | 27 | Head | School Teacher | Wisconsin |
| 79 | Raymond R. Nelson | 28 | Head | Farmer | Colorado |
| 80 | Nellie R. Nelson | 30 | Wife | — | Wyoming |
Pedigree Summary
William
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)