RB
Robert Boyd — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Robert Boyd across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents George & Susan — first a son (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Boyd |
| Given Name | Robert A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Comptometer Co |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1000 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Stenographer |
| Township / Ward | Medford City |
| Est. Birth Year | ~1909 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Henrietta Boyd | Daughter | — | 25 | ~1915 |
| Grace Boyd | Daughter | — | 29 | ~1911 |
| Edna Boyd | Daughter | — | 20 | ~1920 |
| Mary Boyd | Head | — | 65 | ~1875 |
| Robert Boyd | Son | — | 31 | ~1909 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 8
Middlesex, Massachusetts · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Robert A. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 19
Middlesex, Massachusetts · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | Robert S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Nova Scotia |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 31
Middlesex-County, Massachusetts · implied b. ~1909 — 5 household members
| Surname | Boyd |
| Given Name | Robert A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Stenographer |
| Industry | Comptometer Co |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1000 |
| Highest Grade | H-4 |
| 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 Boyd across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Linehard (~0.92 confidence) and mother Susan Linehard (~0.92 confidence) and mother Mary Boyd (~0.92 confidence) and father Arthur Boyd (~0.92 confidence) and mother Josephine Boyd (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Linehard
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Susan Linehard
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Mary Boyd
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
Arthur Boyd
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Josephine Boyd
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Boyd
Son · 1940 · age 31 · b. ~1909 · Massachusetts
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Sibling
Edna Boyd
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henrietta Boyd
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Boyd
Sibling · 1940 · age 29
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-t0627-01612-00097)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John E Jr Collins | 21 | Son | New Hawker | Massachusetts |
| 42 | Stephanie Collins | 19 | Daughter | Stenographer | Massachusetts |
| 43 | Ronald Macdonald | 36 | Head | Plasterer | Massachusetts |
| 44 | Eleanor Macdonald | 27 | Wife | — | Massachusetts |
| 45 | Roland Jr Macdonald | 8 | Son | — | Massachusetts |
| 46 | Virginia Macdonald | 7 | Daughter | — | Massachusetts |
| 47 | Williamson Macdonald | 4 | Son | — | Massachusetts |
| 48 | Mary E Macdonald | 1 | Daughter | — | Massachusetts |
| 49 | James Jr Macdonald | 70 | Father in law | Plasterer | Canada-French |
| 50 | Mary Tarno | 16 | Sister in law | — | Massachusetts |
| 51 | Mary Boyd | 65 | Head | — | Canada-English |
| 52 | Robert A Boyd THIS PERSON | 31 | Son | Stenographer | Massachusetts |
| 53 | Grace Boyd | 29 | Daughter | — | Massachusetts |
| 54 | Henrietta Boyd | 25 | Daughter | — | Massachusetts |
| 55 | Edna Boyd | 20 | Daughter | Packer | Massachusetts |
| 56 | Vaughan Robinson | 32 | Head | Milk Salesman | Canada-English |
| 57 | Vibla Robinson | 31 | Wife | — | Massachusetts |
| 58 | Paul Robinson | 9 | Son | — | Massachusetts |
| 59 | David Robinson | 6 | Son | — | Massachusetts |
| 60 | Carol Robinson | 2 | Daughter | — | Massachusetts |
| 61 | William B Paul | 36 | Head | Tool Maker | Massachusetts |
| 62 | Flora Paul | 32 | Wife | — | England |
| 63 | Joan Paul | 9 | Daughter | — | Massachusetts |
| 64 | Robert Murray | 50 | Head | Steam Fitter | Scotland |
| 65 | Mabel V Murray | 52 | Wife | — | Canada-English |
| 66 | Robert W Murray | 19 | Son | Clerk | Massachusetts |
| 67 | Janet B Murray | 17 | Daughter | — | Massachusetts |
| 68 | Stella Mahan | 43 | Lodger | Waitress | Canada-English |
| 69 | Herbert Tame | 60 | Head | Textile Worker | England |
| 70 | Annie E Tame | 62 | Wife | — | England |
| 71 | William Murdock | 32 | Head | Heating Engineer | Mississippi |
| 72 | Agnes M Murdock | 32 | Wife | — | Massachusetts |
| 73 | Cynthia Murdock | 6 | Daughter | — | Massachusetts |
| 74 | William Jr Murdock | 2 | Son | — | Massachusetts |
| 75 | Helen Foley | 25 | Mother in law | Driver | Massachusetts |
| 76 | William Mcnamara | 49 | Head | Store Manager | Tennessee |
| 77 | Mildred Mcnamara | 39 | Wife | Bookkeeper | Massachusetts |
| 78 | William Jr Mcnamara | 15 | Son | — | Massachusetts |
| 79 | Theodore Mcnamara | 13 | Son | — | Massachusetts |
| 80 | Katherine Wilton | 64 | Mother in law | — | England |
Pedigree Summary
Robert + 3 siblings
Gen 1 · 5 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)