MD
Mary Dwyer — 1930 US Census Record
Model Tree available1930 United States Federal Census · Essex, Massachusetts
Our Model Tree links this Mary Dwyer across the 1910, 1920 and 1930 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed), with identified parents John & John — first a daughter (b.~1908), then head of a 4-person household.
Age 22
b. ~1908
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Essex, Massachusetts |
| Surname | Dwyer |
| Given Name | Mary F |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Secretary |
| Industry | Worsted Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Secretary |
| Township / Ward | Methuen Town |
| 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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Dwyer | Head | — | 53 | ~1877 |
| Catherine Dwyer | Spouse | — | 50 | ~1880 |
| John Dwyer | Son | — | 23 | ~1907 |
| Mary Dwyer | Daughter | — | 22 | ~1908 |
Census Appearances
1910
Essex, Massachusetts
Daughter, age 2
Essex, Massachusetts · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dwyer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Essex, Massachusetts
Daughter, age 12
Essex, Massachusetts · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dwyer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| 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
Essex, Massachusetts
Daughter, age 22
Essex, Massachusetts · implied b. ~1908 — 4 household members
| Surname | Dwyer |
| Given Name | Mary F |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Secretary |
| Industry | Worsted Mill |
| Class of Worker | W |
| 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 Dwyer across 3 US Census years (1910, 1920 and 1930) in Essex, Massachusetts, using XGBoost record linkage. Identified parents: father John Dwyer (~0.92 confidence) and father John Dwyer (~0.92 confidence) and mother Catherine Dwyer (~0.92 confidence) and father John Dwyer (~0.92 confidence) and mother Katherine Dwyer (~0.92 confidence) and mother Catherine Dwyer (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Dwyer
b. ~1871
Source father
● Household
· direct · ~0.92
Father
John Dwyer
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Catherine Dwyer
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
John Dwyer
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Katherine Dwyer
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Catherine Dwyer
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Dwyer
Daughter · 1930 · age 22 · b. ~1908 · Massachusetts
★ You are viewing this record
Sibling
John Dwyer
Sibling · 1930 · age 23
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:massachusettscensus00reel901:0634)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Audrey M Gill | 8 | Daughter | — | Massachusetts |
| 52 | Richard Gill | 7 | Son | — | Massachusetts |
| 53 | Alfred Gill | 42 | Head | Machinist | England |
| 54 | Norah Gill | 41 | Wife | Mender | England |
| 55 | Ellis Gill | 5 | Son | — | Massachusetts |
| 56 | Henry Drenthe | 49 | Head | Florist | Holland |
| 57 | Mattie Drenthe | 45 | Wife | — | Holland |
| 58 | Henry F Drenthe | 19 | Son | — | Massachusetts |
| 59 | Dennis F Connelly | 59 | Boarder | — | Massachusetts |
| 60 | Henry Halstead | 53 | Head | Plumber | England |
| 61 | Alice Halstead | 53 | Wife | — | England |
| 62 | Norman Halstead | 27 | Son | Slasher | England |
| 63 | Chester A Brown | 36 | Head | Teacher | Maine |
| 64 | Bessie M Brown | 33 | Wife | — | Maine |
| 65 | Flora L Brown | 13 | Daughter | — | Maine |
| 66 | Chester B Brown | 11 | Son | — | Maine |
| 67 | Joseph Tennant | 38 | Head | Auto Mechanic | Massachusetts |
| 68 | Esther Tennant | 35 | Wife | — | Massachusetts |
| 69 | Warren Tennant | 12 | Son | — | Massachusetts |
| 70 | Robert Tennant | 8 | Son | — | Massachusetts |
| 71 | John Gillett | 42 | Head | Laborer | England |
| 72 | Jennie Gillett | 40 | Wife | — | Massachusetts |
| 73 | Mary Gillett | 18 | Daughter | — | Massachusetts |
| 74 | Dennis Doran | 58 | Head | Inspector | Massachusetts |
| 75 | Elizabeth Doran | 56 | Sister | — | Massachusetts |
| 76 | Katherine Doran | 50 | Sister | Cook | Massachusetts |
| 77 | Joseph R Henderson | 46 | Head | Farm Laborer | England |
| 78 | James Breton | 30 | Head | Millwright | Massachusetts |
| 79 | Gilda Breton | 27 | Wife | — | New Hampshire |
| 80 | Jeannette Breton | 6 | Daughter | — | Massachusetts |
| 81 | Alice Breton | 5 | Daughter | — | Massachusetts |
| 82 | Marcelle Breton | 3 | Daughter | — | Massachusetts |
| 83 | Angelina Breton | 56 | Mother | — | Canada-French |
| 84 | Arthur Domingue | 38 | Head | Millwright | Massachusetts |
| 85 | Eva Domingue | 38 | Wife | — | Massachusetts |
| 86 | Charles Domingue | 13 | Son | — | New Hampshire |
| 87 | Rita Domingue | 12 | Daughter | — | New Hampshire |
| 88 | Lillian Domingue | 10 | Daughter | — | Massachusetts |
| 89 | Theresa Domingue | 6 | Daughter | — | Massachusetts |
| 90 | Elizabeth Buckley | 67 | Head | — | England |
| 91 | Annie Broadhurst | 60 | Sister | — | England |
| 92 | Edward Bamford | 29 | Head | Cloth Hand | Massachusetts |
| 93 | Catherine Bamford | 26 | Wife | — | Massachusetts |
| 94 | Robert Bamford | 3 | Son | — | Massachusetts |
| 95 | James Bamford | 2 | Son | — | Massachusetts |
| 96 | Clifford Bamford | 1 | Son | — | Massachusetts |
| 97 | John Dwyer | 53 | Head | Hoseman | Massachusetts |
| 98 | Catherine Q Dwyer | 50 | Wife | — | Massachusetts |
| 99 | John Dwyer | 23 | Son | Operator | Massachusetts |
| 100 | Mary F Dwyer THIS PERSON | 22 | Daughter | Secretary | Massachusetts |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 6 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)