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Mary Welch — 1920 US Census Record
Model Tree available1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Welch across the 1900, 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Charlotte & Robert — first a daughter (b.~1893), then head of a 4-person household.
Age 27
b. ~1893
Female
Daughter
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | Welch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1893 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Welch | Daughter | — | 27 | ~1893 |
| Charlotte Welch | Daughter | — | 21 | ~1899 |
| Charlotte Welch | Head | — | 50 | ~1870 |
| William Welch | Son | — | 13 | ~1907 |
Census Appearances
1900
Middlesex, Massachusetts
Daughter, age 7
Middlesex, Massachusetts · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Birth Month | May |
| Birth Year | 1893 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | At School |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1910
Middlesex, Massachusetts
Daughter, age 16
Middlesex, Massachusetts · implied b. ~1894 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | Mary A |
| 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
Middlesex, Massachusetts
Daughter, age 27
Middlesex, Massachusetts · implied b. ~1893 — 4 household members
| Surname | Welch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| 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 |
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 Welch across 3 US Census years (1900, 1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: mother Charlotte Welch (~0.92 confidence) and father Robert Welch (~0.60 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.76
Mother
Charlotte Welch
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
Robert Welch
b. ~1893
Source father
● Household
· direct · ~0.6
This person
Anchor record
Mary Welch
Daughter · 1920 · age 27 · b. ~1893 · Massachusetts
★ You are viewing this record
Sibling
Charlotte Welch
Sibling · 1920 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Welch
Sibling · 1920 · age 13
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
1920 US Federal Census — Middlesex, Massachusetts
Open full size
1920 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu707unit:0364)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Lilly E Cloges | 53 | Daughter | — | Vermont |
| 52 | Julia Regan | 40 | Servant | Servant | Ireland |
| 53 | James Sullivan | 78 | Head | — | Ireland |
| 54 | Mary E Sullivan | 74 | Wife | — | Massachusetts |
| 55 | Elizabeth Sullivan | 47 | Daughter | Office Clerk | Massachusetts |
| 56 | Mary Sullivan | 43 | Daughter | — | Massachusetts |
| 57 | Edith C Sullivan | 41 | Daughter | Office Clerk | Massachusetts |
| 58 | Grace P Sullivan | 36 | Daughter | Office Clerk | Massachusetts |
| 59 | Erskine A Gay | 43 | Head | Salesman | New York |
| 60 | Minnie W Gay | 51 | Wife | — | Maine |
| 61 | Mary E Hogan | 43 | Head | — | Massachusetts |
| 62 | George H Hogan | 45 | Brother | Chain Maker | Massachusetts |
| 63 | Charles A Hogan | 33 | Brother | Conductor | Massachusetts |
| 64 | Catherine Callahan | 70 | Head | — | Ireland |
| 65 | Elizabeth Callahan | 34 | Daughter | Compositor | Massachusetts |
| 66 | Jeremiah Ahearn | 35 | Head | Manager | Massachusetts |
| 67 | Anna Ahearn | 32 | Wife | — | Massachusetts |
| 68 | Catherine Ahearn | 6 | Daughter | — | Massachusetts |
| 69 | William Ahearn | 3 | Son | — | Massachusetts |
| 70 | Napoleon Thiffault | 61 | Head | Laborer | Canada |
| 71 | Delphine Thiffault | 52 | Wife | — | Massachusetts |
| 72 | Ralph Thiffault | 22 | Son | — | Massachusetts |
| 73 | Robert A Thiffault | 21 | Fruit & Produce | Chauffeur | Massachusetts |
| 74 | Charles J Thiffault | 16 | Son | Grocery Clerk | Massachusetts |
| 75 | Francis Thiffault | 15 | Son | Grocery Clerk | Massachusetts |
| 76 | Lawrence Thiffault | 12 | Son | — | Massachusetts |
| 77 | John Beach | 30 | Head | Baker | New York |
| 78 | Alice Beach | 24 | Wife | — | Canada |
| 79 | Thomas Hughes | 50 | Head | Janitor | Ireland |
| 80 | Annie Hughes | 49 | Wife | — | Massachusetts |
| 81 | Leonard Hughes | 25 | Son | Machinist | Massachusetts |
| 82 | Raymond Hughes | 17 | Son | Timekeeper | Massachusetts |
| 83 | William J Ford | 18 | Lodger | Salesman | Massachusetts |
| 84 | John Ford | 21 | Lodger | Mechanic | Massachusetts |
| 85 | Esther Hughes | 23 | Daughter-in-law | Stitcher | Massachusetts |
| 86 | Dennis D Sullivan | 45 | Head | Painter | Massachusetts |
| 87 | Margaret A Sullivan | 44 | Wife | — | Massachusetts |
| 88 | Frederick J Sullivan | 14 | Son | — | Massachusetts |
| 89 | Humphrey Sullivan | 13 | Son | — | Massachusetts |
| 90 | Charles Sullivan | 8 | Son | — | Massachusetts |
| 91 | James L Sullivan | 5 | Son | — | Massachusetts |
| 92 | Redmond Amlie | 52 | Head | Lieutenant | Ireland |
| 93 | Annie C Amlie | 47 | Wife | — | Massachusetts |
| 94 | Edward M Amlie | 21 | Son | Inspector | Massachusetts |
| 95 | William H Amlie | 16 | Son | — | Massachusetts |
| 96 | Margaret Amlie | 12 | Daughter | — | Massachusetts |
| 97 | Charlotte Welch | 50 | Head | Office Clerk | Massachusetts |
| 98 | Mary Welch THIS PERSON | 27 | Daughter | — | Massachusetts |
| 99 | Charlotte Welch | 21 | Daughter | — | Massachusetts |
| 100 | William Welch | 13 | Son | — | Massachusetts |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 2 parents
~0.76
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)