DA
Donald Anderson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Donald Anderson across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Anderson |
| Given Name | Donald A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same Place |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Grace Anderson | Daughter | — | 5 | ~1935 |
| Roy Anderson | Head | — | 45 | ~1895 |
| Stuart Anderson | Son | — | 9 | ~1931 |
| Warren Anderson | Son | — | 15 | ~1925 |
| William Anderson | Son | — | 19 | ~1921 |
| George Anderson | Son | — | 23 | ~1917 |
| Raymond Anderson | Son | — | 8 | ~1932 |
| Donald Anderson | Son | — | 11 | ~1929 |
| Eva Anderson | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 1
Middlesex, Massachusetts · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Donald C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 11
Middlesex-County, Massachusetts · implied b. ~1929 — 9 household members
| Surname | Anderson |
| Given Name | Donald A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Highest Grade | No 7 |
| 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 Donald Anderson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Donald Anderson
Son · 1940 · age 11 · b. ~1929 · Massachusetts
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Sibling
Grace Anderson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Anderson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Anderson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stuart Anderson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Anderson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Warren Anderson
Sibling · 1940 · age 15
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
1940 US Federal Census — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01705-00222)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter King | 35 | Head | Laborer | Massachusetts |
| 2 | Doris V. King | 27 | Wife | — | Massachusetts |
| 3 | Betty-Lou King | 6 | Daughter | — | Massachusetts |
| 4 | Robert King | 5 | Son | — | Massachusetts |
| 5 | Patricia King | 3 | Daughter | — | Massachusetts |
| 6 | Jean King | 1 | Daughter | — | Massachusetts |
| 7 | Salva Guido | 48 | Head | Machinist | Italy |
| 8 | Jennie V. Guido | 37 | Wife | — | Italy |
| 9 | Angie P. Guido | 14 | Daughter | — | Massachusetts |
| 10 | Paul A. Guido | 12 | Son | — | Massachusetts |
| 11 | Ernie J. Guido | 11 | Daughter | — | Massachusetts |
| 12 | Robert L. Guido | 4 | Son | — | Massachusetts |
| 13 | Anthony Grandonia | 37 | Head | Presser | Italy |
| 14 | Rose Marie Grandonia | 34 | Wife | — | Italy |
| 15 | Alfred A. Grandonia | 10 | Son | — | Massachusetts |
| 16 | Mary Ann Grandonia | 7 | Daughter | — | Massachusetts |
| 17 | Roy D. Anderson | 45 | Head | Painter | Massachusetts |
| 18 | Eva M. Anderson | 42 | Wife | — | Massachusetts |
| 19 | George H. Anderson | 23 | Son | Apprentice Copper Smith | Massachusetts |
| 20 | William B. Anderson | 19 | Son | New Worker | Massachusetts |
| 21 | Warren A. Anderson | 15 | Son | — | Massachusetts |
| 22 | Donald A. Anderson THIS PERSON | 11 | Son | — | Massachusetts |
| 23 | Stuart G. Anderson | 9 | Son | — | Massachusetts |
| 24 | Raymond Anderson | 8 | Son | — | Massachusetts |
| 25 | Grace Anderson | 5 | Daughter | — | Massachusetts |
| 26 | George D'Ieno | 40 | Head | Soap Maker | Canada English |
| 27 | Grace V. D'Ieno | 32 | Wife | — | Canada English |
| 28 | Earl D'Ieno | 9 | Son | — | Massachusetts |
| 29 | Evelyn D'Ieno | 5 | Daughter | — | Massachusetts |
| 30 | Donald D'Ieno | 1 | Son | — | Massachusetts |
| 31 | — | None | — | — | — |
| 32 | Rita S. Marques | 48 | Head | — | Massachusetts |
| 33 | Louise Marques | 22 | Daughter | Apron Folder | Massachusetts |
| 34 | Delphine Marques | 21 | Daughter | Hair Dresser | Massachusetts |
| 35 | Thealia Marques | 4 | Granddaughter | — | Massachusetts |
| 36 | Levi Gamarsh | 79 | Boarder | — | Maine |
| 37 | Rudolph Marques | 32 | Head | Supervisor | Massachusetts |
| 38 | Alice B. Marques | 32 | Wife | — | Massachusetts |
| 39 | Barbara M. Marques | 0 | Daughter | — | Massachusetts |
| 40 | Jeanette Marques | 29 | Sister | — | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)