Margaret Mahoney — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Middlesex-County, Massachusetts

Our Model Tree links this Margaret Mahoney across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 8-person household.

Age 50 b. ~1890 Female Spouse Born: Massachusetts Married

1940 Census Record Details

Census Year	1940
Location	Middlesex-County, Massachusetts
Surname	Mahoney
Given Name	Margaret E
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Massachusetts
1935 Residence (County)	Middlesex
Additional Details
Highest Grade	H 4
Birth State	Massachusetts
Birth Country	United States
Birthplace (normalized)	massachusetts
Township / Ward	Arlington Town
Est. Birth Year	~1890

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 1940 census.

Name	Relation to head	Relative to Margaret	Age	Birth yr
Frank Mahoney	Head	—	56	~1884
Frances Mahoney	Daughter	—	14	~1926
Marie Cortrell	Other	—	29	~1911
Joan Cortrell	Other	—	4	~1936
Claudia Cortrell	Other	—	5	~1935
Lorraine Mahoney	Daughter	—	13	~1927
Margaret Mahoney	Spouse	—	50	~1890
Edward Mahoney	Son	—	11	~1929

Census Appearances

1920

Middlesex, Massachusetts

Other, age 29

Middlesex, Massachusetts · implied b. ~1891 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mahoney
Given Name	Margaret E.
Relationship to Head	Nurse
Sex	F
Color / Race	White
Age	29
Marital Status	Married
Birthplace	Massachusetts
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Occupation	Nurse
Industry	Private Family
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth State	Massachusetts
Birth Country	United States
Birthplace (normalized)	massachusetts

1930

Middlesex, Massachusetts

Spouse, age 40

Middlesex, Massachusetts · implied b. ~1890 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mahoney
Given Name	Margaret E
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	40
Marital Status	Married
Birthplace	Massachusetts
Age at First Marriage	30
Father's Birthplace	Irish Free State
Mother's Birthplace	Irish Free State
Can Read/Write	Yes
Birth State	Massachusetts
Birth Country	United States
Birthplace (normalized)	massachusetts

1940

Middlesex-County, Massachusetts

Spouse, age 50

Middlesex-County, Massachusetts · implied b. ~1890 — 8 household members

Surname	Mahoney
Given Name	Margaret E
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Massachusetts
1935 Residence (County)	Middlesex
Highest Grade	H 4
Birth State	Massachusetts
Birth Country	United States
Birthplace (normalized)	massachusetts

Model Tree

Linked across censuses

Our Model Tree links Margaret Mahoney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

Show:

This person

Anchor record

Margaret Mahoney

Spouse · 1940 · age 50 · b. ~1890 · Massachusetts

★ You are viewing this record

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-t0627-01601-00257)

Line	Name	Age	Relation	Occupation	Birthplace
1	Charles W Lowell	2	Son	—	Massachusetts
2	Mary M Donnelly	46	Head	—	Irish Free State
3	Thomas J Donnelly	25	Son	—	Massachusetts
4	Margaret Mary Donnelly	22	Daughter	—	Massachusetts
5	Thomas J Pendergast	74	Head	—	Massachusetts
6	Mary E Pendergast	72	Wife	—	Massachusetts
7	Charles W Pendergast	36	Son	Chauffeur	Massachusetts
8	Daniel J Pendergast	34	Son	—	Massachusetts
9	Roger J Pendergast	32	Son	Printer	Massachusetts
10	Edward P Pendergast	28	Son	Driver Truck	Massachusetts
11	James L Pendergast	24	Son	Gardner	Massachusetts
12	Anne P O'Brien	76	Head	—	Irish Free State
13	Thomas J O'Brien	45	Son	Laborer	Massachusetts
14	William F O'Brien	43	Son	Foreman	Massachusetts
15	George W O'Brien	30	Son	Shipping	Massachusetts
16	William F O'Brien	18	Grandson	Shipping	Massachusetts
17	Harriet O'Brien	10	Granddaughter	—	Massachusetts
18	Frank J Mahoney	56	Head	Post Office	Massachusetts
19	Margaret E Mahoney THIS PERSON	50	Wife	—	Massachusetts
20	Frances Mahoney	14	Daughter	—	Massachusetts
21	Lorraine Mahoney	13	Daughter	—	Massachusetts
22	Edward Mahoney	11	Son	—	Massachusetts
23	Marie Cortrell	29	Lodger	Telephone Operator	Massachusetts
24	Claudia Cortrell	5	Lodger's daughter	—	Massachusetts
25	Joan Cortrell	4	Lodger's daughter	—	Massachusetts
26	Frank M Burns	55	Head	Chauffeur	Massachusetts
27	Catherine Burns	50	Wife	—	Irish Free State
28	Francis Burns	21	Son	Gardner	Massachusetts
29	Andrew Burns	17	Son	—	Massachusetts
30	Catherine Burns	14	Daughter	—	Massachusetts
31	John J Sheahan	67	Head	—	Irish Free State
32	Catherine T Sheahan	66	Wife	—	Irish Free State
33	Mary C Sheahan	33	Daughter	Billing Clerk	Massachusetts
34	Catherine A Sheahan	27	Daughter	General Office Work	Massachusetts
35	Ann T Sheahan	30	Daughter	—	Massachusetts
36	Edgar J Wagner	39	Head	20	Canada Eng
37	Harriett C Wagner	39	Wife	—	Massachusetts
38	James Wagner	16	Son	—	Massachusetts
39	Thomas Wagner	4	Son	—	Massachusetts
40	Owen Mcgirl	50	Head	—	Irish Free State

Search for Margaret Mahoney

All Margaret Mahoney Census Records Discover Mahoney Family Tree

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)

Report inaccurate data