MJ
Mildred Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mildred Johnson across the 1910, 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Thomas & Arthur — first a daughter (b.~1909), then head of a 3-person household.
Age 21
b. ~1909
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Johnson |
| Given Name | Mildred J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Belmont Town Pt |
| 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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mildred | Age | Birth yr |
|---|---|---|---|---|
| Mildred Johnson | Daughter | — | 21 | ~1909 |
| Ethel Johnson | Daughter | — | 16 | ~1914 |
| Clara Johnson | Head | — | 56 | ~1874 |
Census Appearances
1910
Middlesex, Massachusetts
Daughter, age
Middlesex, Massachusetts · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Daughter, age 10
Middlesex, Massachusetts · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 21
Middlesex, Massachusetts · implied b. ~1909 — 3 household members
| Surname | Johnson |
| Given Name | Mildred J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| 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 Mildred Johnson across 3 US Census years (1910, 1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: father Thomas Johnson (~0.92 confidence) and father Arthur Johnson (~0.92 confidence) and mother Mabel Johnson (~0.92 confidence) and mother Annie Johnson (~0.92 confidence) and mother Clara Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Johnson
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Arthur Johnson
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Mabel Johnson
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Annie Johnson
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Clara Johnson
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mildred Johnson
Daughter · 1930 · age 21 · b. ~1909 · Massachusetts
★ You are viewing this record
Sibling
Ethel Johnson
Sibling · 1930 · age 16
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:massachusettscensus00reel914:0644)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur W Young | 23 | Son | Chauffeur | Massachusetts |
| 2 | Madeline W Young | 21 | Daughter | — | Massachusetts |
| 3 | Martha E Young | 19 | Daughter | — | Massachusetts |
| 4 | Mildred P Young | 15 | Daughter | — | Massachusetts |
| 5 | Hazel C Young | 3 | Daughter | — | Massachusetts |
| 6 | Robert Cason | 71 | Head | Special Nurse | Canada-English |
| 7 | Mary Cason | 49 | Daughter-H | — | Massachusetts |
| 8 | Norman W Clancy | 29 | Head | Foreman | Connecticut |
| 9 | Doris P Clancy | 28 | Wife-H | — | Connecticut |
| 10 | George Mullen | 17 | Boarder | — | Massachusetts |
| 11 | Dorothy Mullen | 16 | Boarder | — | Massachusetts |
| 12 | James Mullen | 14 | Boarder | — | Massachusetts |
| 13 | Thomas Mullen | 12 | Boarder | — | Massachusetts |
| 14 | Agnes M Gallagher | 74 | Head | — | Ohio |
| 15 | Rose M Gallagher | 32 | Daughter | — | Massachusetts |
| 16 | Alfred J Blake | 24 | Head | Special Police | Rhode Island |
| 17 | Helen M Blake | 22 | Wife-H | Assistant Nurse | Rhode Island |
| 18 | H S Reynolds | 67 | Head | — | Canada-English |
| 19 | Elizabeth J Reynolds | 62 | Wife-H | Nurse | Canada-English |
| 20 | Geo F Green | 27 | Head | Salesman | New York |
| 21 | Ida V Green | 24 | Wife-H | — | New York |
| 22 | Ida D Green | 0 | Daughter | — | Massachusetts |
| 23 | William P Desmond | 45 | Head | Janitor | Ireland Free State |
| 24 | Nellie A Desmond | 52 | Wife-H | — | Ireland Free State |
| 25 | Fred J Ayer | 42 | Head | Metal Worker | Maine |
| 26 | Bessie G Ayer | 34 | Wife-H | — | Maine |
| 27 | Ida F Ayer | 14 | Daughter | — | Massachusetts |
| 28 | Muriel Ayer | 9 | Daughter | — | Massachusetts |
| 29 | Mabel Hall | 21 | Boarder | Stitcher | Massachusetts |
| 30 | Lester Farnum | 47 | Boarder | Pattern Maker | Massachusetts |
| 31 | Mary H Cash | 64 | Head | Practical Nurse | Scotland |
| 32 | Margaret Cash | 35 | Daughter-H | — | Massachusetts |
| 33 | Arthur C Day | 44 | Head | Salesman | New Hampshire |
| 34 | Lillian S Day | 40 | Wife-H | — | Massachusetts |
| 35 | Arthur S Day | 20 | Son | Salesman | New York |
| 36 | Robert M Day | 18 | Son | Salesman | New York |
| 37 | Agnes A Day | 16 | Son | — | New York |
| 38 | Leonard S Day | 8 | Son | — | Massachusetts |
| 39 | Allan L Jones | 43 | Head | Paper Cutter | Massachusetts |
| 40 | Katherine Jones | 22 | Daughter | Saleslady | Massachusetts |
| 41 | Ruth E Jones | 17 | Daughter | — | Massachusetts |
| 42 | Alfred L Jr Jones | 15 | Son | — | Massachusetts |
| 43 | Paul B Jones | 8 | Son | — | Massachusetts |
| 44 | Mildred M Browning | 19 | Boarder | Nurse | Indiana |
| 45 | George W White | 50 | Head | Foreman | Nova Scotia |
| 46 | Gertrude C White | 48 | Wife-H | — | Massachusetts |
| 47 | George W White | 24 | Son | — | Massachusetts |
| 48 | Clara E Johnson | 56 | Head | Foreman | Massachusetts |
| 49 | Mildred J Johnson THIS PERSON | 21 | Daughter | — | Massachusetts |
| 50 | Ethel R Johnson | 16 | Daughter | — | Massachusetts |
Pedigree Summary
Mildred + 1 sibling
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)