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Mary Bacon — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Bacon across the 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 1
b. ~1929
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Bacon |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1929 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Bacon | Daughter | — | 1 | ~1929 |
| Annie Bacon | Spouse | — | 35 | ~1895 |
| Elizabeth Bacon | Daughter | — | 11 | ~1919 |
| George Bacon | Son | — | 6 | ~1924 |
| William Bacon | Son | — | 8 | ~1922 |
| Margaret Bacon | Daughter | — | 3 | ~1927 |
| George Bacon | Head | — | 35 | ~1895 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 1
Middlesex, Massachusetts · implied b. ~1929 — 7 household members
| Surname | Bacon |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 11
Middlesex-County, Massachusetts · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bacon |
| Given Name | Marjorie N. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lexington |
| 1935 Residence (County) | Middlesex |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| 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 Bacon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Bacon
Daughter · 1930 · age 1 · b. ~1929 · Massachusetts
★ You are viewing this record
Sibling
George Bacon
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Bacon
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Bacon
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Bacon
Sibling · 1930 · age 3
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
48 people indexed on this census page (ia:1930:massachusettscensus00reel929:0314)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Francis J. Donovan | 28 | Boarder | Bank Operator | Massachusetts |
| 52 | Robert C. Donovan | 25 | Boarder | Book Keeper | Massachusetts |
| 53 | Thomas Delaney | 55 | Head | Machinist | Irish Free State |
| 54 | Margaret Delaney | 50 | Wife | — | Irish Free State |
| 55 | Annie Delaney | 30 | Daughter | Stenographer | Irish Free State |
| 56 | Alice Delaney | 23 | Daughter | Assembler | Massachusetts |
| 57 | Margaret Delaney | 21 | Daughter | Comptometer Operator | Massachusetts |
| 58 | Thomas J. Delaney | 10 | Son | — | Massachusetts |
| 59 | Walter Delaney | 3 | Grand Son | — | Massachusetts |
| 60 | Lawrence Donnaruma | 55 | Head | — | Italy |
| 61 | Paul Donnaruma | 20 | Son | Baggage Clerk | Massachusetts |
| 62 | Florence Donnaruma | 19 | Daughter | Salesgirl | Massachusetts |
| 63 | George E. Leel | 32 | Head | Battery Station | Massachusetts |
| 64 | Alice M. Leel | 31 | Wife | — | Canada English |
| 67 | Antonio Cafasso | 64 | Head | Tailor | Italy |
| 68 | Mary Cafasso | 64 | Wife | — | Italy |
| 69 | William Cafasso | 26 | Son | Painter | Connecticut |
| 70 | Angeline Cafasso | 21 | Daughter | — | Massachusetts |
| 71 | Lena Cafasso | 19 | Daughter | — | Massachusetts |
| 72 | Laura Cafasso | 17 | Daughter | — | Massachusetts |
| 73 | George Cafasso | 16 | Son | — | Massachusetts |
| 74 | Anthony Costa | 23 | Head | Mechanic | Massachusetts |
| 75 | Emma Costa | 23 | Wife | — | Connecticut |
| 76 | Dorothy Costa | 1 | Daughter | — | Massachusetts |
| 77 | John Costa | 0 | Son | — | Massachusetts |
| 78 | Aaron Robinson | 39 | Head | Candy Maker | New Hampshire |
| 79 | Lillian Robinson | 32 | Wife | — | Northern Ireland |
| 80 | Lillian Robinson | 4 | Daughter | — | Massachusetts |
| 81 | Marion Robinson | 2 | Daughter | — | Massachusetts |
| 82 | Aaron Robinson | 0 | Son | — | Massachusetts |
| 83 | Luella Field | 66 | Mother | — | New Hampshire |
| 84 | Leonard Spinelli | 26 | Head | Machinist | Italy |
| 85 | Rose Spinelli | 23 | Wife | — | Massachusetts |
| 86 | Edward Spinelli | 65 | Father | — | Italy |
| 87 | Amelia Spinelli | 62 | Mother | — | Italy |
| 88 | Frank Lefave | 30 | Head | Spotter | Canada French |
| 89 | Mary Lefave | 35 | Wife | Stitcher | Canada French |
| 90 | Thomas Benoit | 47 | Brother-in-law | Desk Hand | Canada French |
| 91 | Henrietta Benoit | 37 | Sister-in-law | Stitcher | Canada French |
| 92 | Sophie Mcdonald | 27 | Sister-in-law | Stitcher | Canada French |
| 93 | Brother-In-Law Loma | 22 | — | Tailor | Canada French |
| 94 | George W. Bacon | 35 | Head | Firefighter | Massachusetts |
| 95 | Annie L. Bacon | 35 | Wife | — | Massachusetts |
| 96 | Elizabeth L. Bacon | 11 | Daughter | — | Massachusetts |
| 97 | William A. Bacon | 8 | Son | — | Massachusetts |
| 98 | George E. Bacon | 6 | Son | — | Massachusetts |
| 99 | Margaret L. Bacon | 3 | Daughter | — | Massachusetts |
| 100 | Mary Louise Bacon THIS PERSON | 1 | Daughter | — | Massachusetts |
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)