HJ
Harold Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Harold Johnson across the 1910, 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Harold & Martha — first a son (b.~1910), then head of a 6-person household.
Age 20
b. ~1910
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Johnson |
| Given Name | Harold F. Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Rhode Island |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Natick Town Pt Ii |
| Est. Birth Year | ~1910 |
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 1930 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Johnson | Daughter | — | 12 | ~1918 |
| Doris Johnson | Daughter | — | 14 | ~1916 |
| Harold Johnson | Head | — | 46 | ~1884 |
| Robert Johnson | Son | — | 10 | ~1920 |
| Harold Johnson | Son | — | 20 | ~1910 |
| Martha Johnson | Spouse | — | 43 | ~1887 |
Census Appearances
1910
Middlesex, Massachusetts
Son, age 1
Middlesex, Massachusetts · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Son, age 10
Middlesex, Massachusetts · implied b. ~1910 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Harold H. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Rhode Island |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 20
Middlesex, Massachusetts · implied b. ~1910 — 6 household members
| Surname | Johnson |
| Given Name | Harold F. Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Rhode Island |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Home Owned/Rented | 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 Harold Johnson across 3 US Census years (1910, 1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: father Harold Johnson (~0.92 confidence) and mother Martha Johnson (~0.92 confidence) and mother Martha Johnson (~0.92 confidence) and mother Hanna Johnson (~0.92 confidence) and mother Alice Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harold Johnson
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Martha Johnson
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Martha Johnson
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Hanna Johnson
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Alice Johnson
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Johnson
Son · 1930 · age 20 · b. ~1910 · Massachusetts
★ You are viewing this record
Sibling
Doris Johnson
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Johnson
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Johnson
Sibling · 1930 · age 12
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
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel925:0511)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Hazel Rivers | 32 | Wife - H | Stitcher | Massachusetts |
| 52 | Arthur Jr Rivers | 13 | Son | — | Massachusetts |
| 53 | Berta Rivers | 12 | Daughter | — | Massachusetts |
| 54 | Charles F Glazier | 31 | Head | Machinist | Massachusetts |
| 55 | Louise Glazier | 29 | Wife - H | — | Massachusetts |
| 56 | Charles R Glazier | 8 | Son | — | Massachusetts |
| 57 | Richard D Glazier | 0 | Son | — | Massachusetts |
| 58 | Leroy Davis | 40 | Head | Chauffeur | Maine |
| 59 | Anna G Davis | 36 | Wife - H | — | Massachusetts |
| 60 | Daniel Davis | 14 | Son | — | Massachusetts |
| 61 | William Davis | 8 | Son | — | Massachusetts |
| 62 | Robert Davis | 6 | Son | — | Massachusetts |
| 63 | William Davis | 6 | Son | — | Massachusetts |
| 64 | Myrtle Withrow | 49 | Servant | Servant | Canada English |
| 65 | Frank Potter | 71 | Head | Shoe Maker | New Hampshire |
| 66 | Sarah F Potter | 78 | Wife - H | — | Massachusetts |
| 67 | Eliot Conyers | 25 | Head | Mason | New Hampshire |
| 68 | Beatrice Conyers | 61 | Wife - H | — | Vermont |
| 69 | Fred Lundholm | 54 | Head | Machinist | Sweden |
| 70 | Ida Lundholm | 62 | Wife - H | — | Sweden |
| 71 | Helen Lundholm | 22 | Daughter | Bookkeeper | Massachusetts |
| 72 | Lucy B Holbrook | 65 | Head - H | — | Massachusetts |
| 73 | Anna Johnson | 62 | Head - H | — | Sweden |
| 74 | Svea E Johnson | 35 | Daughter | Secretary | Massachusetts |
| 75 | Alice Johnson | 32 | Daughter | Clerk | Sweden |
| 76 | William W Somersall | 41 | Head | Salesmanager | Massachusetts |
| 77 | Doris Somersall | 36 | Wife - H | — | Massachusetts |
| 78 | Ruth Somersall | 12 | Daughter | — | Massachusetts |
| 79 | Richard Somersall | 4 | Son | — | Massachusetts |
| 80 | Harry F Brown | 37 | Head | Manager | Maine |
| 81 | Ida May Brown | 39 | Wife - H | — | New Jersey |
| 82 | Janice Brown | 4 | Daughter | — | Massachusetts |
| 83 | Annie C Brown | 73 | Mother-in-law | — | Pennsylvania |
| 84 | Winslow Badger | 46 | Head | Owner | Massachusetts |
| 85 | Edna Badger | 42 | Wife - H | — | Massachusetts |
| 86 | Carlton Badger | 8 | Son | — | Massachusetts |
| 87 | S. Edgar Knowlton | 43 | Head | Plumbing | Massachusetts |
| 88 | Alice B Knowlton | 42 | Wife - H | — | Massachusetts |
| 89 | Kenneth E Knowlton | 16 | Son | — | Massachusetts |
| 90 | Francis H Knowlton | 13 | Son | — | Massachusetts |
| 91 | Marjory Knowlton | 10 | Daughter | — | Massachusetts |
| 92 | Robert J Knowlton | 8 | Son | — | Massachusetts |
| 93 | Goldwin S Holbrook | 31 | Head | Accountant | Massachusetts |
| 94 | Phyllis W Holbrook | 24 | Wife - H | Asst Bookkeeper | New Hampshire |
| 95 | Harold F Johnson | 46 | Head | Asst Manager | Rhode Island |
| 96 | Martha S Johnson | 43 | Wife | — | Massachusetts |
| 97 | Harold F. Jr Johnson THIS PERSON | 20 | Son | — | Massachusetts |
| 98 | Doris Johnson | 14 | Daughter | — | Massachusetts |
| 99 | Elizabeth Johnson | 12 | Daughter | — | Massachusetts |
| 100 | Robert S Johnson | 10 | Son | — | Massachusetts |
Pedigree Summary
Harold + 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 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)