Margaret Mahoney — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Lake-County, Montana

Our Model Tree links this Margaret Mahoney across the 1920, 1930 and 1940 US Censuses in Lake-County, Montana (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 2-person household.

Age 51 b. ~1889 Female Head Born: Colorado Widowed

1940 Census Record Details

Census Year	1940
Location	Lake-County, Montana
Surname	Mahoney
Given Name	Margaret
Relationship to Head	Head
Sex	F
Color / Race	White
Age	51
Marital Status	Widowed
Birthplace	Colorado
1935 Residence (City)	Mission Township
1935 Residence (County)	Lake
Additional Details
Class of Worker	0
Highest Grade	C-2
1935 Residence	Same House
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado
Township / Ward	Mission Township
Est. Birth Year	~1889

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.

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

Name	Relation to head	Relative to Margaret	Age	Birth yr
Margaret Mahoney	Head	—	51	~1889
William Mahoney	Son	—	27	~1913

Census Appearances

1920

Missoula, Montana

Spouse, age 30

Missoula, Montana · 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	30
Marital Status	Married
Birthplace	Colorado
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

1930

Lake, Montana

Spouse, age 41

Lake, Montana · implied b. ~1889 — 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	41
Marital Status	Married
Birthplace	Colorado
Age at First Marriage	21
Father's Birthplace	Ireland Free State
Mother's Birthplace	Ireland Free State
Can Read/Write	Yes
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

1940

Lake-County, Montana

Head, age 51

Lake-County, Montana · implied b. ~1889 — 2 household members

Surname	Mahoney
Given Name	Margaret
Relationship to Head	Head
Sex	F
Color / Race	White
Age	51
Marital Status	Widowed
Birthplace	Colorado
1935 Residence (City)	Mission Township
1935 Residence (County)	Lake
Class of Worker	0
Highest Grade	C-2
1935 Residence	Same House
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

Model Tree

Linked across censuses

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

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This person

Anchor record

Margaret Mahoney

Head · 1940 · age 51 · b. ~1889 · Montana

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Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — Lake-County, Montana Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02222-00183)

Line	Name	Age	Relation	Occupation	Birthplace
1	Fern Beaver	23	Wife	—	Nebraska
2	Floyd Beaver	4	Son	—	Montana
3	Aksel Jager	57	Head	Farmer	Norway
4	Anna Jager	43	Wife	—	Oklahoma
5	Evelyn Jager	19	Daughter	—	Montana
6	Kathryn Jager	18	Daughter	—	Montana
7	Dora Jager	14	Daughter	—	Montana
8	Donna Jager	14	Daughter	—	Montana
9	Silver Potter	44	Head	Farmer	Montana
10	Gladys Potter	41	Wife	—	Idaho
11	Margaret Potter	20	Daughter	—	Idaho
12	Frank Parker	43	Head	Farmer	Arkansas
13	Stella Parker	34	Wife	—	So. Dakota
14	Eileen Parker	11	Daughter	—	California
15	Vivian Parker	8	Daughter	—	California
16	Glen Parker	3	Son	—	Montana
17	Margaret Mahoney THIS PERSON	51	Head	—	Colorado
18	William H. Jr. Mahoney	27	Son	Farmer	Montana
19	Lillian M. Flanagan	53	Head	Farmer	Nebraska
20	Frank Dosen	64	Head	Farmer	Iowa
21	Georgia Dosen	46	Wife	—	Montana
22	Barbra Dosen	9	Daughter	—	Montana
23	Jean Murchison	20	Step Daughter	—	Montana
24	Robert N. Mcknight	66	Head	Farmer	Tennessee
25	Leola Mcknight	59	Wife	—	Tennessee
26	Martin Mcknight	31	Son	Farm Hand	Oklahoma
27	Dorothy Mcknight	28	Daughter	Cookery	Montana
28	Robert Mcknight	25	Son	Farm Hand	Montana
29	George Van Ross	28	Head	Farmer	Canada-Eng
30	Evelyn Van Ross	22	Wife	—	Kansas
31	George Jr. Van Ross	3	Son	—	Montana
32	Jerry Van Ross	1	Son	—	Montana
33	Chester Hlink	42	Head	Farmer	Ohio
34	Hazel Hlink	42	Wife	—	Iowa
35	William Hlink	19	Son	—	Montana
36	Mary Hlink	17	Daughter	—	Montana
37	William Lage	20	Hired Hand	Farm Hand	Minnesota
38	William Warthen	61	Head	Farmer	Iowa
39	Margaret Warthen	60	Wife	—	Iowa
40	Emma Warthen	18	Daughter	—	Montana

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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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