RD
Robert Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Robert Davis across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Robert & Helen — first a son (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Davis |
| Given Name | Robert V. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Winchester |
| Additional Details | |
| Occupation | New Worker |
| Hours Worked | 36 |
| Income (1939) | 0 |
| Highest Grade | H 3 |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | New Worker |
| Township / Ward | Winchester |
| Est. Birth Year | ~1912 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Davis | Head | — | 56 | ~1884 |
| Charles Davis | Son | — | 23 | ~1917 |
| Robert Davis | Son | — | 28 | ~1912 |
| Helen Davis | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 8
Middlesex, Massachusetts · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Robert V. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New Hampshire |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Middlesex, Massachusetts
Son, age 18
Middlesex, Massachusetts · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Robert V Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New Hampshire |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Middlesex-County, Massachusetts
Son, age 28
Middlesex-County, Massachusetts · implied b. ~1912 — 4 household members
| Surname | Davis |
| Given Name | Robert V. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Winchester |
| Occupation | New Worker |
| Hours Worked | 36 |
| Income (1939) | 0 |
| Highest Grade | H 3 |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Robert Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Davis (~0.92 confidence) and mother Helen Davis (~0.92 confidence) and mother Helen Davis (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Davis
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Helen Davis
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Helen Davis
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Davis
Son · 1940 · age 28 · b. ~1912 · Massachusetts
★ You are viewing this record
Sibling
Charles Davis
Sibling · 1940 · age 23
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01622-00131)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | C. Philip O'Rourke | 45 | Head | Executive | Massachusetts |
| 2 | Eloise O'Rourke | 44 | Wife | — | Arkansas |
| 3 | C. Philip Jr. O'Rourke | 13 | Son | — | Massachusetts |
| 4 | Edward F. O'Rourke | 12 | Son | — | Massachusetts |
| 5 | Nancy O'Rourke | 8 | Daughter | — | Massachusetts |
| 6 | Mary Burke | 67 | Mother-in-law | — | Arkansas |
| 7 | Stanley D. Howe | 39 | Head | Engineer | Massachusetts |
| 8 | Lillian P. Howe | 41 | Wife | — | Massachusetts |
| 9 | David A. Howe | 12 | Son | — | Massachusetts |
| 10 | Barbara D. Howe | 10 | Daughter | — | Massachusetts |
| 11 | Mary Louise Howe | 3 | Daughter | — | Massachusetts |
| 12 | Left By Mistake | None | — | — | — |
| 13 | Percy Bugbee | 41 | Head | Manager | Massachusetts |
| 14 | Wilhelmina Bugbee | 40 | Wife | — | Massachusetts |
| 15 | Richard S. Bugbee | 17 | Son | — | Massachusetts |
| 16 | Alan Bugbee | 12 | Son | — | Massachusetts |
| 17 | Margery Bugbee | 8 | Daughter | — | Massachusetts |
| 18 | Alice Harris | 21 | Servant | Servant | Massachusetts |
| 19 | Charles A. Walker | 64 | Head | Manager | England |
| 20 | Ada Walker | 65 | Wife | — | England |
| 21 | Walter G. Walker | 26 | Son | Salesman | Massachusetts |
| 22 | Bryant E. Moulton | 48 | Head | Physician | Maine |
| 23 | Katherine Moulton | 49 | Wife | — | Maine |
| 24 | Elizabeth Moulton | 21 | Daughter | Secretary | New Hampshire |
| 25 | Barbara Moulton | 18 | Daughter | — | Maine |
| 26 | Eleanor Moulton | 15 | Daughter | — | Michigan |
| 27 | Robert V. Davis | 56 | Head | Salesman | New York |
| 28 | Helen F. Davis | 56 | Wife | — | Massachusetts |
| 29 | Robert V. Jr. Davis THIS PERSON | 28 | Son | New Worker | New York |
| 30 | Charles F. Davis | 23 | Son | Salesman | New York |
| 31 | Robert A. Perkins | 59 | Head | Selling Agent | Massachusetts |
| 32 | Grace C. Perkins | 62 | Wife | — | Maine |
| 33 | M. Chella | 56 | Sister | Clerk | Massachusetts |
| 34 | Sarah Vyners | 57 | Servant | Servant | New Hampshire |
| 35 | Everett F. Kidder | 56 | Head | Accountant | Maine |
| 36 | Ruby F. Kidder | 52 | Wife | — | Massachusetts |
| 37 | Sarah J. Spear | 62 | Head | — | Massachusetts |
| 38 | William J. Spear | 47 | Son | Clerk | Massachusetts |
| 39 | Margaret H. Spear | 47 | Daughter-in-law | — | Maine |
| 40 | Left By Mistake | None | — | — | — |
Pedigree Summary
Robert + 1 sibling
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)