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Alfred Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Plymouth, Massachusetts
Our Model Tree links this Alfred Johnson across the 1910, 1920 and 1930 US Censuses in Plymouth, Massachusetts (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1903), then head of a 3-person household.
Age 27
b. ~1903
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Plymouth, Massachusetts |
| Surname | Johnson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Hingham Town |
| 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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Alfred | Age | Birth yr |
|---|---|---|---|---|
| John Johnson | Head | — | 61 | ~1869 |
| Alfred Johnson | Son | — | 27 | ~1903 |
| Mary Johnson | Spouse | — | 50 | ~1880 |
Census Appearances
1910
Plymouth, Massachusetts
Son, age 7
Plymouth, Massachusetts · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Plymouth, Massachusetts
Son, age 17
Plymouth, Massachusetts · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Massachusetts |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Plymouth, Massachusetts
Son, age 27
Plymouth, Massachusetts · implied b. ~1903 — 3 household members
| Surname | Johnson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Massachusetts |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| 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 Alfred Johnson across 3 US Census years (1910, 1920 and 1930) in Plymouth, Massachusetts, using XGBoost record linkage. Identified parents: father John Johnson (~0.92 confidence) and father John Johnson (~0.92 confidence) and mother Mary Johnson (~0.92 confidence) and mother Mary Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Johnson
b. ~1869
Source father
● Household
· direct · ~0.92
Father
John Johnson
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Mary Johnson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Mary Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Alfred Johnson
Son · 1930 · age 27 · b. ~1903 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Plymouth, Massachusetts
Open full size
1930 US Federal Census — Plymouth, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel940:0205)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | M. Wife Marion | 55 | Wife | — | Massachusetts |
| 52 | S. Daughter Marion | 26 | Daughter | Auditor | Connecticut |
| 53 | Ab Son Robert | 21 | Son | — | Connecticut |
| 54 | F Son Donald | 18 | Son | — | Connecticut |
| 55 | Peter C. Foley | 53 | Head | Carpenter | Canada-English |
| 56 | Elizabeth P. Foley | 54 | Wife | — | Canada-English |
| 57 | Ian G. Foley | 24 | Son | Electrician | Massachusetts |
| 58 | Margaret Brown | 61 | Head | — | Germany |
| 59 | Raymond Brown | 29 | Son | Clerk | Massachusetts |
| 60 | Cyril J. Laravee | 55 | Head | Carpenter | Massachusetts |
| 61 | Mary L. Laravee | 45 | Wife | — | Vermont |
| 62 | Macmillan | 30 | Head | Lawyer | Rhode Island |
| 63 | Margaret Macmillan | 23 | Wife | — | Japan |
| 64 | Jean Macmillan | 1 | Daughter | — | Massachusetts |
| 65 | Henry Holt | 55 | Head | Laborer | Maine |
| 66 | Elizabeth G. Holt | 55 | Wife | — | Massachusetts |
| 67 | Elizabeth M. Holt | 36 | Daughter | — | Massachusetts |
| 68 | Frank W. Cushing | 56 | Head | Laborer | Massachusetts |
| 69 | Alice B. Cushing | 50 | Wife | — | Massachusetts |
| 70 | Helen F. Cushing | 22 | Daughter | Secretary | Massachusetts |
| 71 | Gladys L. Cushing | 13 | Daughter | — | Massachusetts |
| 72 | John Johnson | 61 | Head | Gardener | Denmark |
| 73 | Mary E. Johnson | 50 | Wife | — | Massachusetts |
| 74 | Alfred Johnson THIS PERSON | 27 | Son | Clerk | Massachusetts |
| 75 | Walter H. Whitelock | 54 | Head | Agent | Massachusetts |
| 76 | Kathryn Whitelock | 46 | Wife | — | New York |
| 77 | Kathryn M. Whitelock | 20 | Daughter | Clerk | Massachusetts |
| 78 | Emma Tyrell | 63 | Mother-in-law | — | New York |
| 79 | Bernice F. Tyrell | 44 | Sister-in-law | Electrician | Vermont |
| 80 | Mary Buffum | 72 | Head | — | Massachusetts |
| 81 | Gertrude Buffum | 47 | Daughter | — | Massachusetts |
| 82 | Robert W. Hull | 60 | Head | Finisher | Massachusetts |
| 83 | Catherine Hull | 57 | Wife | — | Massachusetts |
| 84 | Byron Hull | 27 | Son | Salesman | Massachusetts |
| 85 | Harold T. Davis | 34 | Head | Attorney | Massachusetts |
| 86 | Catherine Davis | 30 | Wife | — | Massachusetts |
| 87 | Harold T. Jr. Davis | 6 | Son | — | Massachusetts |
| 88 | Eleanor Davis | 2 | Daughter | — | Massachusetts |
| 89 | Catherine Mcintyre | 23 | Maid | Maid | Canada-English |
| 90 | Albert A. Sargent | 38 | Head | Broker | Massachusetts |
| 91 | Harriett Sargent | 38 | Wife | — | Massachusetts |
| 92 | Albert A. Jr. Sargent | 14 | Son | — | Massachusetts |
| 93 | Ella B. Sargent | 9 | Daughter | — | Massachusetts |
| 94 | Joseph Benjamin | 51 | Head | Grinder | Massachusetts |
| 95 | Robert P. Adair | 36 | Head | Engineer | Virginia |
| 96 | Elizabeth L. Adair | 33 | Wife | — | Massachusetts |
| 97 | Cornelia Adair | 4 | Daughter | — | Massachusetts |
| 98 | Dorothy Adair | 2 | Daughter | — | Massachusetts |
| 99 | Charles Harrington | 26 | Head | Clerk | Maine |
| 100 | Evelyn Harrington | 24 | Wife | — | Massachusetts |
Pedigree Summary
Alfred
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)