RB
Robert Boyd — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this Robert Boyd across the 1920, 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & Elizabeth — first a head (b.~1906), then head of a 6-person household.
Age 34
b. ~1906
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Boyd |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| Additional Details | |
| Occupation | Asst Manager |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1500 |
| Highest Grade | H 4 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Asst Manager |
| Township / Ward | Upper Darby |
| Est. Birth Year | ~1906 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Boyd | Head | — | 34 | ~1906 |
| William Theurer | Other | — | 33 | ~1907 |
| Genevie Theurer | Other | — | 32 | ~1908 |
| Robert Boyd | Son | — | 7 | ~1933 |
| Dale Boyd | Son | — | 5 | ~1935 |
| Florence Boyd | Spouse | — | 30 | ~1910 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 14
Philadelphia, Pennsylvania · implied b. ~1906 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | No. Carolina |
| Mother's Birthplace | No. Carolina |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Head, age 25
Philadelphia, Pennsylvania · implied b. ~1905 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 24 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | England |
| Occupation | teller |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Head, age 34
Delaware-County, Pennsylvania · implied b. ~1906 — 6 household members
| Surname | Boyd |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| Occupation | Asst Manager |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1500 |
| Highest Grade | H 4 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Boyd across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Boyd (~0.92 confidence) and mother Elizabeth Boyd (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Boyd
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Boyd
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Boyd
Head · 1940 · age 34 · b. ~1906 · Pennsylvania
★ 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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03497-00818)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Francis L. Headley | 37 | Head | Engineer | S. Dakota |
| 42 | Grace D. Headley | 40 | Wife | — | S. Dakota |
| 43 | Marian Headley | 10 | Daughter | — | Pennsylvania |
| 44 | Ernest Brown | 37 | Head | Electric Engineer | Pennsylvania |
| 45 | Eloise D. Brown | 35 | Wife | — | Pennsylvania |
| 46 | Ernest E. Jr. Brown | 5 | Son | — | Pennsylvania |
| 47 | Jacob Edgar Sollinger | 58 | Head | Medical Doctor | Pennsylvania |
| 48 | Sarah E. Sollinger | 57 | Wife | — | Pennsylvania |
| 49 | Mary Mullen | 65 | Sister-in-law | — | Pennsylvania |
| 50 | Margaret Mullen | 63 | Sister-in-law | — | Pennsylvania |
| 51 | Harvey S. Battersby | 30 | Head | Engineer | Pennsylvania |
| 52 | Gloria D. Battersby | 26 | Wife | — | Pennsylvania |
| 53 | George H. Dickel | 53 | Father-in-law | Credit Man | Pennsylvania |
| 54 | George S. Dickel | 23 | Brother-in-law | Clerk | Pennsylvania |
| 55 | Samuel M. Arnold | 44 | Head | Manager | Pennsylvania |
| 56 | Elinor Arnold | 44 | Wife | — | Pennsylvania |
| 57 | Doris Arnold | 21 | Daughter | Clerk | Pennsylvania |
| 58 | William F. Kiefer | 32 | Head | Instrument Maker | Pennsylvania |
| 59 | Pauline A. D. Kiefer | 32 | Wife | — | Pennsylvania |
| 60 | Eveline Kiefer | 6 | Daughter | — | Pennsylvania |
| 61 | Robert Boyd THIS PERSON | 34 | Head | Asst Manager | Pennsylvania |
| 62 | Florence Boyd | 30 | Wife | — | Pennsylvania |
| 63 | Robert Boyd | 7 | Son | — | Pennsylvania |
| 64 | Dale Boyd | 5 | Son | — | Pennsylvania |
| 65 | William Theurer | 33 | Brother-in-law | Fabricator | Pennsylvania |
| 66 | Genevie Theurer | 32 | Sister-in-law | — | Pennsylvania |
| 67 | William Dooley | 37 | Head | Leadingman | Pennsylvania |
| 68 | Mary Dooley | 36 | Wife | — | Pennsylvania |
| 69 | William Dooley | 7 | Son | — | Pennsylvania |
| 70 | Mary Ellen Dooley | 2 | Daughter | — | Pennsylvania |
| 71 | Howard E. Langhammer | 35 | Head | Teacher | Pennsylvania |
| 72 | Ethel G. Langhammer | 33 | Wife | — | Pennsylvania |
| 73 | Albert Moosman | 29 | Head | Supervisor | Pennsylvania |
| 74 | Madeline D. Moosman | 29 | Wife | — | Pennsylvania |
| 75 | A. Wm. Moosman | 6 | Son | — | Pennsylvania |
| 76 | S. Paul Campbell | 40 | Head | Physiotherapist | Maryland |
| 77 | Olivia Campbell | 41 | Wife | — | Pennsylvania |
| 78 | Diane Campbell | 11 | Daughter | — | Pennsylvania |
| 79 | Mary Glasser | 71 | Mother-in-law | — | Pennsylvania |
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)