MG
Mary Grant — 1930 US Census Record
Model Tree available1930 United States Federal Census · Essex, Massachusetts
Our Model Tree links this Mary Grant across the 1910, 1920 and 1930 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed), with identified parents Joseph & Mary — first a daughter (b.~1895), then head of a 3-person household.
Age 35
b. ~1895
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Essex, Massachusetts |
| Surname | Grant |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| 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 | Gloucester City |
| Est. Birth Year | ~1895 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Grant | Daughter | — | 35 | ~1895 |
| Emily Grant | Daughter | — | 52 | ~1878 |
| Joseph Grant | Head | — | 71 | ~1859 |
Census Appearances
1910
Essex, Massachusetts
Daughter, age 16
Essex, Massachusetts · implied b. ~1894 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grant |
| Given Name | May L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Essex, Massachusetts
Daughter, age 26
Essex, Massachusetts · implied b. ~1894 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grant |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | At Home |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Daughter, age 35
Essex, Massachusetts · implied b. ~1895 — 3 household members
| Surname | Grant |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| 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 Mary Grant across 3 US Census years (1910, 1920 and 1930) in Essex, Massachusetts, using XGBoost record linkage. Identified parents: father Joseph Grant (~0.92 confidence) and mother Mary Grant (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Grant
b. ~1859
Source father
● Household
· direct · ~0.92
Mother
Mary Grant
b. ~1859
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Grant
Daughter · 1930 · age 35 · b. ~1895 · Massachusetts
★ You are viewing this record
Sibling
Emily Grant
Sibling · 1930 · age 52
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 — Essex, Massachusetts
Open full size
1930 US Federal Census — Essex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel896:0231)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Nellie Tanner | 43 | Wife-H | Housekeeper | Irish Free State |
| 52 | David H. Saunders | 66 | Head | Designer | Massachusetts |
| 53 | Augusta J. Saunders | 58 | Wife-H | — | Massachusetts |
| 54 | Helen S. Saunders | 26 | Daughter | Reg. Nurse | Massachusetts |
| 55 | Gilbert N. Pettingill | 60 | Head | Chiropodist | Massachusetts |
| 56 | Jane M. Pettingill | 52 | Wife-H | — | English Canada |
| 57 | Virginia Pettingill | 19 | Daughter | — | Massachusetts |
| 58 | Joseph Grant | 71 | Head | Buyer | Massachusetts |
| 59 | Emily A. Grant | 52 | Daughter | Maid | Massachusetts |
| 60 | Mary J. Grant THIS PERSON | 35 | Daughter | — | Massachusetts |
| 61 | Simon Macmahon | 43 | Head | Asst. Superintendent | Irish Free State |
| 62 | Mary Macmahon | 38 | Wife-H | — | Irish Free State |
| 63 | Catherine M. Macmahon | 10 | Daughter | — | Massachusetts |
| 64 | Winnifred A. Macmahon | 8 | Daughter | — | Massachusetts |
| 65 | Helen Macmahon | 6 | Daughter | — | Massachusetts |
| 66 | Samuel W. Davis | 39 | Head | Contractor | Massachusetts |
| 67 | Florence B. Davis | 34 | Wife-H | — | Massachusetts |
| 68 | Barbara M. Davis | 9 | Daughter | — | Massachusetts |
| 69 | Robert L. Davis | 5 | Son | — | Massachusetts |
| 70 | William S. Davis | 4 | Son | — | Massachusetts |
| 71 | Marjorie Everett N. | 30 | Bro-in-law | Chauffeur | Massachusetts |
| 72 | Joseph A. Le Gendre | 34 | Head | Police Man | Vermont |
| 73 | Agnes S. Le Gendre | 33 | Wife-H | — | Canada-English |
| 74 | John Sheen | 32 | Head | Fisherman | Canada-English |
| 75 | Eliza A. Sheen | 28 | Wife-H | Bookkeeper | Massachusetts |
| 76 | Leon Ada F. Sheen | 61 | Mother-in-law | — | Canada-English |
| 77 | Maurice P. Sheen | 21 | Bro-in-law | Iron Man | Massachusetts |
| 78 | Mary E. Adams | 37 | Head-H | — | Massachusetts |
| 79 | John W. Adams | 5 | Son | — | Massachusetts |
| 80 | Johnson | 20 | Head | — | — |
| 81 | Anna W. Winn | 66 | Head-H | — | Canada-English |
| 82 | Katherine A. Winn | 37 | Daughter | Teacher | Massachusetts |
| 83 | Benjamin F. Winn | 25 | Son | Gardener | Massachusetts |
| 84 | Mary E. Jacobson | 61 | Roomer | Dress Maker | Massachusetts |
| 85 | Roger H. Ab. Lunes | 12 | Gr-Son | — | Massachusetts |
| 86 | Carolyn H. Lunes | 9 | Gr-Daughter | — | Massachusetts |
| 87 | James P. Lunes | 7 | Gr-Son | — | Massachusetts |
| 88 | Jennie L. Mitchell | 60 | Head-H | Interpreter | Massachusetts |
| 89 | Edward Mitchell | 33 | Son | Chauffeur | Massachusetts |
| 90 | Margaret M. Mitchell | 27 | Daughter-in-law | — | Massachusetts |
| 91 | Ruth L. Mitchell | 10 | Gr-Daughter | — | Massachusetts |
| 92 | Edward J. Jr. Mitchell | 5 | Gr-Son | — | Massachusetts |
| 93 | Margaret Frazier | 74 | Head-H | — | Canada-English |
| 94 | James P. Frazier | 42 | Son | — | Massachusetts |
| 95 | Sarah M. Anderson | 47 | Head-H | Domestic | Massachusetts |
| 96 | Rena M. Anderson | 14 | Daughter | — | Massachusetts |
| 97 | Henry Langley | 54 | Head | Fisherman | Canada-French |
| 98 | Annie M. Langley | 53 | Wife-H | Cook & Waitress | Irish Free State |
| 99 | Edward J. Barrigan | 27 | Step-Son | Fish Skinner | Massachusetts |
| 100 | Catherine A. Oliver | 35 | Head-H | Waitress | Canada-English |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 2 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)