MN
Mary Nicholson — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Nicholson across the 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1899), then head of a 7-person household.
Age 21
b. ~1899
Female
Daughter
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | Nicholson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Machine operator |
| Industry | Confectioner Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Machine Operator |
| Township / Ward | Malden City |
| Est. Birth Year | ~1899 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Michael Nicholson | Son | — | 27 | ~1893 |
| Harry Nicholson | Son | — | 23 | ~1897 |
| Michael Nicholson | Head | — | 58 | ~1862 |
| Charles Nicholson | Son | — | 23 | ~1897 |
| Mary Nicholson | Daughter | — | 21 | ~1899 |
| Louise Nicholson | Daughter | — | 25 | ~1895 |
| Mary Nicholson | Spouse | — | 55 | ~1865 |
Census Appearances
1910
Middlesex, Massachusetts
Daughter, age 11
Middlesex, Massachusetts · implied b. ~1899 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Daughter, age 21
Middlesex, Massachusetts · implied b. ~1899 — 7 household members
| Surname | Nicholson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Machine operator |
| Industry | Confectioner Co |
| Class of Worker | W |
| 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 Nicholson across 2 US Census years (1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Nicholson
Daughter · 1920 · age 21 · b. ~1899 · Massachusetts
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Sibling
Michael Nicholson
Sibling · 1920 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Nicholson
Sibling · 1920 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Nicholson
Sibling · 1920 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Nicholson
Sibling · 1920 · 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
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:1920:14thcensusofpopu713unit:0462)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Mclean | 64 | Mother | — | Scotland |
| 2 | Walter Skinner | 40 | Head | — | Massachusetts |
| 3 | Zilpha Skinner | 66 | Wife | — | Massachusetts |
| 4 | Walter Skinner | 18 | Son | Shoemaker | Massachusetts |
| 5 | May Skinner | 16 | Daughter | — | Massachusetts |
| 6 | Franklin Skinner | 15 | Son | — | Massachusetts |
| 7 | Ada Millett | 7 | Granddaughter | — | Massachusetts |
| 8 | Doris Millett | 3 | Granddaughter | — | Massachusetts |
| 9 | Arthur Skinner | 1 | Son | — | Massachusetts |
| 10 | Alexander Jack | 47 | Head | Paper Cutter | Scotland |
| 11 | Jane Jack | 49 | Wife | — | Scotland |
| 12 | Mary Jack | 16 | Daughter | — | Scotland |
| 13 | Agnes Jack | 14 | Daughter | — | Scotland |
| 14 | Andrew Jack | 12 | Son | — | Massachusetts |
| 15 | Margaret Jack | 9 | Daughter | — | Massachusetts |
| 16 | Julia Hering | 36 | Lodger | Bookkeeper | England |
| 17 | Robert Hering | 13 | Lodger | — | Scotland |
| 18 | Michael Nicholson | 58 | Head | Machinist | Scotland |
| 19 | Mary Nicholson | 55 | Wife | — | Scotland |
| 20 | Michael Nicholson | 27 | Son | Manager | Massachusetts |
| 21 | Louise Nicholson | 25 | Daughter | Telephone Oper. | Massachusetts |
| 22 | Charles Nicholson | 23 | Son | Office Clerk | Massachusetts |
| 23 | Harry Nicholson | 23 | Son | Office Clerk | Massachusetts |
| 24 | Mary Nicholson THIS PERSON | 21 | Daughter | Machine Operator | Massachusetts |
| 25 | Neils Horton | 64 | Head | — | Maine |
| 26 | Florence Horton | 35 | Daughter | Office Clerk | Massachusetts |
| 27 | David Horton | 22 | Son | Stationary Engineer | Massachusetts |
| 28 | Ivy Ferron | 28 | Housekeeper | Housekeeper | Massachusetts |
| 29 | Charles Davis | 53 | Head | Police Officer | New York |
| 30 | Sarah Davis | 48 | Wife | — | Canada |
| 31 | Elmina Davis | 16 | Daughter | — | Massachusetts |
| 32 | Dorothy Davis | 13 | Daughter | — | Massachusetts |
| 33 | Marion Davis | 11 | Daughter | — | Massachusetts |
| 34 | Adeline Davis | 10 | Daughter | — | Massachusetts |
| 35 | Mildred Davis | 7 | Daughter | — | Massachusetts |
| 36 | George Caulkins | 32 | Head | Manager | Maine |
| 37 | Velma Caulkins | 33 | Wife | — | Massachusetts |
| 38 | Rhoda Caulkins | 0 | Daughter | — | Massachusetts |
| 39 | Will Brown | 59 | Head | Musician | New Hampshire |
| 40 | Edith Brown | 54 | Wife | — | Maine |
| 41 | Ethel Brown | 26 | Daughter | Book Binder | Massachusetts |
| 42 | George Wingdell | 57 | Cousin | — | New Hampshire |
| 43 | Caroline Spaulding | 52 | Lodger | Shoemaker | Maine |
| 44 | Horace Evans | 40 | Head | Chauffeur | Maine |
| 45 | Alice Evans | 44 | Wife | — | Massachusetts |
| 46 | Elizabeth Evans | 25 | Daughter | Ticket Seller | Maine |
| 47 | George Damon | 71 | Head | Merchant | Massachusetts |
| 48 | Sarah Damon | 62 | Wife | — | Massachusetts |
| 49 | Nellie Damon | 44 | Daughter | — | Massachusetts |
| 50 | Charlotte Damon | 42 | Daughter | — | Massachusetts |
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)