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Mildred Harris — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mildred Harris across the 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 8-person household.
Age 17
b. ~1913
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Harris |
| Given Name | Mildred E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Township Of Westford Part Of |
| Est. Birth Year | ~1913 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mildred | Age | Birth yr |
|---|---|---|---|---|
| Catherine Harris | Daughter | — | 13 | ~1917 |
| Mary Harris | Spouse | — | 42 | ~1888 |
| Mary Harris | Daughter | — | 15 | ~1915 |
| Ruth Harris | Daughter | — | 11 | ~1919 |
| Emmett Harris | Son | — | 5 | ~1925 |
| Edward Harris | Head | — | 43 | ~1887 |
| Mildred Harris | Daughter | — | 17 | ~1913 |
| Edward Harris | Son | — | 8 | ~1922 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 7
Middlesex, Massachusetts · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Mildred M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| 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 17
Middlesex, Massachusetts · implied b. ~1913 — 8 household members
| Surname | Harris |
| Given Name | Mildred E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| 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 Harris across 2 US Census years (1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mildred Harris
Daughter · 1930 · age 17 · b. ~1913 · Massachusetts
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Sibling
Catherine Harris
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Harris
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emmett Harris
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Harris
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Harris
Sibling · 1930 · age 11
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
40 people indexed on this census page (ia:1930:15thcensuspopula917unit:0797)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | George S Cousins | 37 | Head | Chauffeur | Massachusetts |
| 52 | Lida Cousins | 37 | Wife | — | Massachusetts |
| 53 | Hazel Cousins | 17 | Daughter | — | Massachusetts |
| 54 | Ralph Cousins | 16 | Son | Laborer | Massachusetts |
| 55 | Ruth Cousins | 14 | Daughter | — | Massachusetts |
| 56 | Marguerite Cousins | 12 | Daughter | — | Massachusetts |
| 57 | Thelma Cousins | 10 | Daughter | — | Massachusetts |
| 58 | John Garrigan | 31 | Head | Merchant | Massachusetts |
| 59 | Sarah Garrigan | 33 | Wife | — | Ireland |
| 60 | John Jr Garrigan | 4 | Son | — | Massachusetts |
| 61 | Robert A Garrigan | 3 | Son | — | Massachusetts |
| 62 | John E Larkin | 27 | Head | Truck Driver | Massachusetts |
| 63 | Mary E Larkin | 24 | Wife | — | Rhode Island |
| 64 | John J Larkin | 52 | Head | Machinist | Ireland |
| 65 | Margaret Larkin | 50 | Wife | — | Massachusetts |
| 66 | Patrick V Larkin | 24 | Son | Chauffeur | Massachusetts |
| 67 | Mary E Larkin | 17 | Daughter | — | Massachusetts |
| 68 | Catherine R Larkin | 15 | Daughter | — | Massachusetts |
| 69 | Frances Larkin | 12 | Son | — | Massachusetts |
| 70 | Frederick Willett | 30 | Head | Farming | Vermont |
| 71 | Jennie Willett | 25 | Wife | — | Canada French |
| 72 | Floyd Willett | 8 | Son | — | Massachusetts |
| 73 | Lois G Willett | 5 | Daughter | — | Massachusetts |
| 74 | Leo F Jr Willett | 2 | Son | — | Massachusetts |
| 75 | Willie Cook | 52 | Head | Wholesale | England |
| 76 | Joseph Delpato | 26 | Head | Laborer | England |
| 77 | Anita Delpato | 24 | Sister | — | Italy |
| 78 | Louisa Delpato | 22 | Sister | Spooler | England |
| 79 | George A Fisher | 42 | Head | Dealer | Massachusetts |
| 80 | Lena A Fisher | 37 | Wife | — | Massachusetts |
| 81 | Alice M Fisher | 17 | Daughter | — | Massachusetts |
| 82 | Glenn R Fisher | 7 | Son | — | Massachusetts |
| 83 | Edward F Harris | 43 | Head | Salesman | Massachusetts |
| 84 | Mary V Harris | 42 | Wife | — | Ireland |
| 85 | Mildred E Harris THIS PERSON | 17 | Daughter | — | Massachusetts |
| 86 | Mary L Harris | 15 | Daughter | — | Massachusetts |
| 87 | Catherine Harris | 13 | Daughter | — | Massachusetts |
| 88 | Ruth Harris | 11 | Daughter | — | Massachusetts |
| 89 | Edward F Jr Harris | 8 | Son | — | Massachusetts |
| 90 | Emmett Harris | 5 | Son | — | Massachusetts |
Related Census Records
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)