RD
Robert Davidson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Robert Davidson across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents George & Margaret — first a head (b.~1900), then head of a 4-person household.
Age 40
b. ~1900
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Davidson |
| Given Name | Robert B |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Shipper |
| Industry | Wholesale Drug |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 2256 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Shipper |
| Township / Ward | Boston |
| Est. Birth Year | ~1900 |
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 Davidson | Son | — | 8 | ~1932 |
| Stanley Davidson | Son | — | 3 | ~1937 |
| Anna Davidson | Spouse | — | 35 | ~1905 |
| Robert Davidson | Head | — | 40 | ~1900 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 20
Suffolk, Massachusetts · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Robert B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Massachusetts |
| Occupation | Machinist |
| Industry | Machine shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Head, age 30
Suffolk, Massachusetts · implied b. ~1900 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Robert B |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 27 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Massachusetts |
| Occupation | Artificial Stone |
| Industry | Building Trimmings |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 45 |
| Radio Set | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Head, age 40
Suffolk-County, Massachusetts · implied b. ~1900 — 4 household members
| Surname | Davidson |
| Given Name | Robert B |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Shipper |
| Industry | Wholesale Drug |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 2256 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Davidson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Davidson (~0.92 confidence) and mother Margaret Davidson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Davidson
b. ~1854
Source father
● Household
· direct · ~0.92
Mother
Margaret Davidson
b. ~1865
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Davidson
Head · 1940 · age 40 · b. ~1900 · Massachusetts
★ 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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01680-00067)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William O Campbell | 7 | Son | — | Massachusetts |
| 42 | Arline R Campbell | 2 | Daughter | — | Massachusetts |
| 43 | Ends Block 42 Campbell | 44 | Begins Block 43 | — | 44 |
| 44 | William J Gorman | 53 | Head | Chauffeur | Kansas |
| 45 | Emill Gorman | 19 | Son | Chauffeur | Massachusetts |
| 46 | Nina Gorman | 15 | Daughter | — | Massachusetts |
| 47 | Frances Garry | 43 | Lodger | Packer | Massachusetts |
| 48 | Patrick J Flynn | 69 | Head | Watchman | Ireland |
| 49 | Annie P Flynn | 61 | Wife | — | Ireland |
| 50 | George Flynn | 36 | Son | Welder | Massachusetts |
| 51 | Francis J Flynn | 34 | Son | Machinist | Massachusetts |
| 52 | Mary R Flynn | 31 | Daughter | Bookkeeper | Massachusetts |
| 53 | Ann M Flynn | 29 | Daughter | — | Massachusetts |
| 54 | Margaret Flynn | 26 | Daughter | Nurse | Massachusetts |
| 55 | Katherine Flynn | 24 | Daughter | Saleslady | Massachusetts |
| 56 | Theresa Flynn | 22 | Daughter | Saleslady | Massachusetts |
| 57 | Ends Block 44 | 45 | Begins Block 45 | — | 45 |
| 58 | Robert B Davidson THIS PERSON | 40 | Head | Shipper | Massachusetts |
| 59 | Anna E Davidson | 35 | Wife | — | Massachusetts |
| 60 | Robert B Jr Davidson | 8 | Son | — | Massachusetts |
| 61 | Stanley P Davidson | 3 | Son | — | Massachusetts |
| 62 | Harold W Somers | 53 | Head | Mechanic | England |
| 63 | Margaret A Somers | 39 | Wife | — | Massachusetts |
| 64 | Donald H Somers | 16 | Son | — | England |
| 65 | Robert L Somers | 15 | Son | — | Vermont |
| 66 | Graham W Somers | 6 | Son | — | Massachusetts |
| 67 | Ends Block 45 | 46 | Begins Block 46 | — | 46 |
| 68 | Nils F Brason | 44 | Head | Store Manager | Massachusetts |
| 69 | Elsie E Brason | 42 | Wife | — | Massachusetts |
| 70 | John Brason | 13 | Son | — | Massachusetts |
| 71 | Prosper Brooks | 77 | Head | Officer | England |
| 72 | Estheria Brooks | 67 | Wife | — | England |
| 73 | Lillian E Brooks | 36 | Daughter | Housekeeper | Massachusetts |
| 74 | Harry E Brooks | 39 | Son | Shipper | Massachusetts |
| 75 | Richard Sefton | 36 | Son-in-law | Store Manager | Massachusetts |
| 76 | Helen Sefton | 34 | Daughter | — | Massachusetts |
| 77 | Ruth E Puccini | 24 | Daughter | — | Massachusetts |
| 78 | Phyllis A Puccini | 1 | Granddaughter | — | Massachusetts |
| 79 | Joseph Brooks | 83 | Brother | — | England |
| 80 | William H Thomas | 75 | Head | Carpenter | Massachusetts |
Pedigree Summary
Robert
Gen 1 · 2 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)