Mary Boyd — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Big-Horn-County, Montana

Our Model Tree links this Mary Boyd across the 1920, 1930 and 1940 US Censuses in Big-Horn-County, Montana (XGBoost, ~Confirmed), with identified parents Cecile & Johnston — first a daughter (b.~1917), then head of a 5-person household.

Age 23 b. ~1917 Female Daughter Born: Wyoming Single

1940 Census Record Details

Census Year	1940
Location	Big-Horn-County, Montana
Surname	Boyd
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	23
Marital Status	Single
Birthplace	Wyoming
1935 Residence (City)	School District 29
1935 Residence (County)	Big Horn
Additional Details
Income (1939)	0
Highest Grade	C-1
1935 Residence	Same place
Birth State	Wyoming
Birth Country	United States
Birthplace (normalized)	wyoming
Township / Ward	School District 29
Est. Birth Year	~1917

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 Mary	Age	Birth yr
Mary Gowans	Daughter	—	37	~1903
Mary Boyd	Daughter	—	23	~1917
Johnston Boyd	Head	—	53	~1887
Perry Watkins	Other	—	35	~1905
Mildred Hawley	Other	—	36	~1904

Census Appearances

1920

Big Horn, …

Daughter, age 3

Big Horn, Montana · implied b. ~1917 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Boyd
Given Name	Mary A.
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	3
Marital Status	Single
Birthplace	Wyoming
Father's Birthplace	Scotland
Mother's Birthplace	New York
Occupation	none
Birth State	Wyoming
Birth Country	United States
Birthplace (normalized)	wyoming

1930

Big Horn, …

Daughter, age 13

Big Horn, Montana · implied b. ~1917 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Boyd
Given Name	Mary A.
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	13
Marital Status	Single
Birthplace	Wyoming
Father's Birthplace	Scotland
Mother's Birthplace	New York
Can Read/Write	Yes
Birth State	Wyoming
Birth Country	United States
Birthplace (normalized)	wyoming

1940

Big-Horn-County, Montana

Daughter, age 23

Big-Horn-County, Montana · implied b. ~1917 — 5 household members

Surname	Boyd
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	White
Age	23
Marital Status	Single
Birthplace	Wyoming
1935 Residence (City)	School District 29
1935 Residence (County)	Big Horn
Income (1939)	0
Highest Grade	C-1
1935 Residence	Same place
Birth State	Wyoming
Birth Country	United States
Birthplace (normalized)	wyoming

Model Tree

Model Tree available

Our Model Tree links Mary Boyd across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Cecile Boyd (~0.92 confidence) and father Johnston Boyd (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Mother

Cecile Boyd

b. ~1886

Source mother

● Household · direct · ~0.92

Father

Johnston Boyd

b. ~1887

Source father

● Household · direct · ~0.92

This person

Anchor record

Mary Boyd

Daughter · 1940 · age 23 · b. ~1917 · Montana

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Sibling

Mary Gowans

Sibling · 1940 · age 37

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 — Big-Horn-County, Montana Open full size

Page Contents

34 people indexed on this census page (nara:1940:m-t0627-02212-00539)

Line	Name	Age	Relation	Occupation	Birthplace
41	Johnston B Boyd	53	Head	Farm Owner	Scotland
42	Mary Boyd THIS PERSON	23	Daughter	—	Wyoming
43	Mary Gowans	37	Daughter	Laborer	Wyoming
44	Mildred Hawley	36	Lodger	Housekeeper	Utah
45	Perry D Watkins	35	Lodger	Laborer	Nebraska
52	Alex P Mitchell	57	Head	Farm Owner	Colorado
53	Edith Mitchell	58	Wife	—	Illinois
54	Joe O'Neil	56	Lodger	Laborer	Texas
55	Leslie Schroeder	35	Head	Farm Owner	Montana
56	Mildred Schroeder	29	Wife	—	Montana
57	Leslie Schroeder	11	Son	—	Wyoming
58	Deane Schroeder	8	Son	—	Montana
59	Edward Schroeder	69	Father	—	Kansas
60	John J Schroeder	30	Head	Bridge Builder	Wyoming
61	Virginia Schroeder	27	Wife	—	New York
62	Dallett W Dillon	32	Head	Farm Owner	Montana
63	Phoebe Dillon	25	Wife	—	Montana
64	Lynne Dillon	4	Daughter	—	Montana
65	Area Dillon	3	Daughter	—	Montana
66	De Witt Dillon	2	Son	—	Montana
67	Thomas S Powers	50	Head	Farm Owner	Wyoming
68	Irma Powers	44	Wife	—	Nebraska
69	Carol Powers	21	Daughter	Cook	Wyoming
70	John Powers	20	Son	—	Wyoming
71	Jane Powers	19	Daughter	—	Wyoming
72	Raymond Powers	16	Son	—	Wyoming
73	Alice Powers	15	Daughter	—	Wyoming
74	Mary Powers	14	Daughter	—	Wyoming
75	Harold Powers	10	Son	—	Wyoming
76	Herald Brown	25	Lodger	Laborer	Nebraska
77	Curtis Parker	23	Lodger	Laborer	Wyoming
78	Harry Williams	34	Head	Laborer	Kansas
79	Dorothy Williams	31	Wife	—	Kansas
80	Cleota Williams	10	Daughter	—	Kansas

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Pedigree Summary

Mary + 1 sibling

Gen 1 · 2 parents ~0.92

Max depth 4 (1900–1950 window)

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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