Richard Mason — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Middlesex-County, Massachusetts

Our Model Tree links this Richard Mason across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 5-person household.

Age 19 b. ~1921 Male Son Born: Massachusetts Single

1940 Census Record Details

Census Year	1940
Location	Middlesex-County, Massachusetts
Surname	Mason
Given Name	Richard P.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	19
Marital Status	Single
Birthplace	Massachusetts
1935 Residence (City)	Lowell city
1935 Residence (County)	Middlesex
Additional Details
Class of Worker	350
Hours Worked	65
Highest Grade	No H4
1935 Residence	Same place
Birth State	Massachusetts
Birth Country	United States
Birthplace (normalized)	massachusetts
Township / Ward	Lowell City
Est. Birth Year	~1921

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.

5 people recorded at the same address in the 1940 census.

Name	Relation to head	Relative to Richard	Age	Birth yr
Madeline Mason	Spouse	—	40	~1900
Richard Mason	Head	—	45	~1895
Richard Mason	Son	—	19	~1921
Elizabeth Mason	Daughter	—	15	~1925
William Mason	Son	—	3	~1937

Census Appearances

1930

Middlesex, Massachusetts

Son, age 9

Middlesex, Massachusetts · implied b. ~1921 — 9 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mason
Given Name	Richard
Relationship to Head	Son
Sex	M
Color / Race	White
Age	9
Marital Status	Single
Birthplace	Massachusetts
Father's Birthplace	Massachusetts
Mother's Birthplace	Massachusetts
Can Read/Write	Yes
Birth State	Massachusetts
Birth Country	United States
Birthplace (normalized)	massachusetts

1940

Middlesex-County, Massachusetts

Son, age 19

Middlesex-County, Massachusetts · implied b. ~1921 — 5 household members

Surname	Mason
Given Name	Richard P.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	19
Marital Status	Single
Birthplace	Massachusetts
1935 Residence (City)	Lowell city
1935 Residence (County)	Middlesex
Class of Worker	350
Hours Worked	65
Highest Grade	No H4
1935 Residence	Same place
Birth State	Massachusetts
Birth Country	United States
Birthplace (normalized)	massachusetts

Model Tree

Linked across censuses

Our Model Tree links Richard Mason across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Richard Mason

Son · 1940 · age 19 · b. ~1921 · Massachusetts

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Sibling

William Mason

Sibling · 1940 · age 3

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

Elizabeth Mason

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

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01692-00698)

Line	Name	Age	Relation	Occupation	Birthplace
1	Albert Muneau	37	Head	Embalmer	Massachusetts
2	Helen Muneau	35	Wife	—	Massachusetts
3	Mary Muneau	10	Daughter	—	Massachusetts
4	George Southerland	29	Head	Overseer	Massachusetts
5	Lois Southerland	25	Wife	—	Massachusetts
6	Carol Southerland	4	Daughter	—	Massachusetts
7	Shirley Southerland	2	Daughter	—	Massachusetts
8	David Southerland	0	Son	—	Massachusetts
9	Edgar Mellows	79	Head	—	Maine
10	Elizabeth Mellows	70	Wife	—	Denmark
11	Andrew Ottoson	67	Lodger	Salesman	Denmark
12	Clement Stoddard	35	Head	Baker	Massachusetts
13	Ruby Stoddard	35	Wife	—	Vermont
14	Clayton Stoddard	10	Son	—	Massachusetts
15	Richard Stoddard	6	Son	—	Massachusetts
16	Nettie Mrs. Bush	63	Mother-in-law	—	Vermont
17	Ralph W. Lawson	25	Head	Operative	Massachusetts
18	Loretta G. Lawson	22	Wife	—	Massachusetts
19	Infant Lawson	0	Son	—	Massachusetts
20	Helen Mcmahon	39	Head	Teacher	Massachusetts
21	Marion Mcmahon	70	Mother	—	Massachusetts
22	Joseph Mcmahon	50	Son	Watchman	Massachusetts
23	Grace Mcmahon	37	Daughter	Teacher	Massachusetts
24	Richard C. Mason	45	Head	Salesman	Massachusetts
25	Madeline Mason	40	Wife	—	Massachusetts
26	Richard P. Mason THIS PERSON	19	Son	—	Massachusetts
27	Elizabeth Mason	15	Daughter	—	Massachusetts
28	William F. Mason	3	Son	—	Massachusetts
29	Merton Mason	78	Head	—	New Hampshire
30	Paul Mason	51	Son	—	Massachusetts
31	Alexander Mason	37	Son	Salesman	Massachusetts
32	Harold Mason	35	Son	Cook	Massachusetts
33	John Corbeil	39	Head	Laborer Street Dept	Massachusetts
34	Mary Corbeil	31	Wife	—	Massachusetts
35	Mary Corbeil	16	Daughter	—	Massachusetts
36	Madeline Corbeil	17	Daughter	—	Massachusetts
37	Louise Corbeil	10	Daughter	—	Massachusetts
38	Elizabeth Corbeil	6	Daughter	—	Massachusetts
39	Jenny Mooney	50	Head	—	Massachusetts
40	George Richards	39	Head	Auto Mechanic	Massachusetts

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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)

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