HA
Harold Adams — 1930 US Census Record
Model Tree available1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Harold Adams across the 1910, 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Walter & Walter — first a son (b.~1908), then head of a 3-person household.
Age 22
b. ~1908
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Adams |
| Given Name | Harold A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | New York |
| Additional Details | |
| Occupation | operator |
| Industry | postal telegraph |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Operator |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1908 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Walter Adams | Head | — | 48 | ~1882 |
| Harold Adams | Son | — | 22 | ~1908 |
| Mary Adams | Spouse | — | 48 | ~1882 |
Census Appearances
1910
Middlesex, Massachusetts
Son, age 2
Middlesex, Massachusetts · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Adams |
| Given Name | Harold M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | New York |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Son, age 13
Middlesex, Massachusetts · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Adams |
| Given Name | Harold R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 22
Middlesex, Massachusetts · implied b. ~1908 — 3 household members
| Surname | Adams |
| Given Name | Harold A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | New York |
| Occupation | operator |
| Industry | postal telegraph |
| 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 Harold Adams across 3 US Census years (1910, 1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: father Walter Adams (~0.92 confidence) and father Walter Adams (~0.92 confidence) and father Oliveira Adams (~0.84 confidence) and mother Mary Adams (~0.92 confidence) and mother Mary Adams (~0.92 confidence) and mother Mary Adams (~0.92 confidence). The pedigree spans 2 generations with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.91
Father
Walter Adams
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Walter Adams
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Oliveira Adams
b. ~1836
Source father>father
● Household
· direct · ~0.84
Mother
Mary Adams
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Mary Adams
b. ~1866
Source mother
● Household
· direct · ~0.92
Mother
Mary Adams
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Adams
Son · 1930 · age 22 · b. ~1908 · 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 — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
38 people indexed on this census page (ia:1930:massachusettscensus00reel922:0012)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Jeremiah F Collins | 38 | Head | Stationary Fireman | Irish Free State |
| 52 | Minnie R Collins | 39 | Wife | None | Irish Free State |
| 53 | Raymond Collins | 14 | Son | None | Massachusetts |
| 54 | Agnes Collins | 12 | Daughter | None | Massachusetts |
| 55 | Jeremiah Jr Collins | 8 | Son | None | Massachusetts |
| 56 | John Collins | 6 | Son | None | Massachusetts |
| 57 | Gedeon Grimard | 58 | Head | Mason | Canada French |
| 58 | Mary Grimard | 23 | Daughter | None | Canada French |
| 59 | Eugene Snow | 23 | Head | Back Tender | Maine |
| 60 | Clara Snow | 28 | Sister | Waitress | Maine |
| 61 | Thelma Snow | 11 | Sister | None | Maine |
| 62 | — | None | — | — | — |
| 63 | — | None | — | — | — |
| 64 | Charles H Gair | 23 | Head | Salesclerk | Massachusetts |
| 65 | Margaret Gair | 23 | Wife | None | Canada English |
| 66 | Barbara Gair | 2 | Daughter | None | Massachusetts |
| 67 | Walter S Adams | 48 | Head | Leatherworker | Maine |
| 68 | Mary A Adams | 48 | Wife | None | New York |
| 69 | Harold A Adams THIS PERSON | 22 | Son | Operator | Massachusetts |
| 70 | John R Sullivan | 33 | Head | Electrician | Massachusetts |
| 71 | Alice M Sullivan | 24 | Wife | None | Massachusetts |
| 72 | Diana Sullivan | 1 | Daughter | None | Massachusetts |
| 73 | Francis Kane | 29 | Head | Leather Worker | Massachusetts |
| 74 | Agnes Kane | 28 | Wife | None | Massachusetts |
| 75 | Francis Jr Kane | 1 | Son | None | Massachusetts |
| 76 | Joseph A Sullivan | 28 | Head | Comber Man | Massachusetts |
| 77 | Margaret Sullivan | 60 | Mother | None | Irish Free State |
| 78 | Thomas J Sheffield | 39 | Head | Salesclerk | Irish Free State |
| 79 | Helen G Sheffield | 34 | Wife | None | Irish Free State |
| 80 | Catherine Sheffield | 6 | Daughter | None | Massachusetts |
| 81 | James P Sheffield | 1 | Son | None | Massachusetts |
| 82 | Martin Gray | 70 | Head | Laborer | Irish Free State |
| 83 | Bridget Gray | 65 | Wife | None | Irish Free State |
| 84 | William Gray | 29 | Son | Saleslady | Massachusetts |
| 85 | Mary Gray | 25 | Daughter | None | Massachusetts |
| 86 | Elizabeth Gray | 21 | Daughter | Saleslady | Massachusetts |
| 87 | Margaret Gray | 20 | Daughter | Saleslady | Massachusetts |
| 88 | John Gray | 28 | Son | Salesman | Massachusetts |
Related Census Records
Pedigree Summary
Harold
Gen 1 · 5 parents
~0.92
Gen 2 · 1 grandparents
~0.84
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)