Mary Blackburn — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Pueblo-County, Colorado

Our Model Tree links this Mary Blackburn across the 1920, 1930 and 1940 US Censuses in Pueblo-County, Colorado (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 7-person household.

Age 46 b. ~1894 Female Spouse Born: Colorado Married

1940 Census Record Details

Census Year	1940
Location	Pueblo-County, Colorado
Surname	Blackburn
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	46
Marital Status	Married
Birthplace	Colorado
1935 Residence (City)	Minnequa Heights
1935 Residence (County)	Pueblo
Additional Details
Income (1939)	0
Highest Grade	H-4
1935 Residence	Same place
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado
Township / Ward	Minnequa Heights
Est. Birth Year	~1894

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Nora Ruspini	Other	—	65	~1875
Harry Blackburn	Son	—	14	~1926
Clayton Blackburn	Son	—	15	~1925
Mary Blackburn	Spouse	—	46	~1894
Chas Blackburn	Head	—	51	~1889
Billie White	Other	—	12	~1928
Eunice Blackburn	Daughter	—	14	~1926

Census Appearances

1920

Pueblo, Colorado

Spouse, age 26

Pueblo, Colorado · implied b. ~1894 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Blackburn
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	26
Marital Status	Married
Birthplace	Colorado
Father's Birthplace	England
Mother's Birthplace	Colorado
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

1930

Pueblo, Colorado

Other, age 36

Pueblo, Colorado · implied b. ~1894 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Blackburn
Given Name	Mary J
Relationship to Head	Wife-H
Sex	F
Color / Race	White
Age	36
Marital Status	Married
Birthplace	Colorado
Age at First Marriage	20
Father's Birthplace	England
Mother's Birthplace	Colorado
Occupation	Teacher
Industry	Own Home
Class of Worker	W
Can Read/Write	Yes
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

1940

Pueblo-County, Colorado

Spouse, age 46

Pueblo-County, Colorado · implied b. ~1894 — 7 household members

Surname	Blackburn
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	46
Marital Status	Married
Birthplace	Colorado
1935 Residence (City)	Minnequa Heights
1935 Residence (County)	Pueblo
Income (1939)	0
Highest Grade	H-4
1935 Residence	Same place
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

Model Tree

Linked across censuses

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

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This person

Anchor record

Mary Blackburn

Spouse · 1940 · age 46 · b. ~1894 · Colorado

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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 — Pueblo-County, Colorado Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00477-00423)

Line	Name	Age	Relation	Occupation	Birthplace
1	Wm. L. Eisenman	37	Head	Roll Turner	Colorado
2	Clara May Eisenman	34	Wife	—	Missouri
3	Clara Eisenman	16	Daughter	New Worker	Colorado
4	William Eisenman	8	Son	—	Colorado
5	Albert Davis Eisenman	4	Son	—	Colorado
6	Harry Lobaugh	56	Head	Laborer	Missouri
7	Ada Lobaugh	50	Wife	—	Illinois
8	Mabry Barbara Lobaugh	8	Daughter	—	Colorado
9	Anna Lobaugh	43	Head	Floor Lady	Wyoming
10	Campell Roseann Lobaugh	12	Niece	—	Colorado
11	Joe Babich	30	Head	Tie Plate Machine	Pennsylvania
12	Mary Babich	28	Wife	—	Colorado
13	Mary Margaret Babich	9	Daughter	—	Colorado
14	John M. Patrick	26	Head	Meat Cutter	Colorado
15	Mary Patrick	19	Wife	—	Colorado
16	Patti Anne Patrick	1	Daughter	—	Colorado
17	M. M. Stollenwerck	32	Head	Craneman	Alabama
18	Marie Stollenwerck	33	Wife	—	Colorado
19	William Stollenwerck	12	Son	Switchman	Colorado
20	Albert Serfling	66	Head	—	Illinois
21	Frances Serfling	63	Wife	—	Kansas
22	George H. Hawk	30	Head	Engineer Power House	Missouri
23	Josephine Hawk	27	Wife	Telephone Operator	Colorado
24	Clarence Serfling	20	Brother-in-law	—	Colorado
25	Chas. D. Blackburn	51	Head	Craneman	Arkansas
26	Mary Blackburn THIS PERSON	46	Wife	—	Colorado
27	Eunice Blackburn	14	Daughter	Instructor Secretary	Colorado
28	Clayton Blackburn	15	Son	—	Colorado
29	Harry Blackburn	14	Son	—	Colorado
30	Nora Ruspini	65	Mother-in-law	—	Colorado
31	Billie White	12	Boarder	—	Colorado
32	C. E. Sr. Bruce	52	Head	Switchman	Missouri
33	Dessie Bruce	55	Wife	—	Kansas
34	V. E. Johnson	67	Head	Watchman	Sweden
35	Dora Johnson	46	Wife	—	Minnesota
36	Esther V. Johnson	23	Daughter	Telephone Operator	Colorado
37	Guy Bushman	44	Head	Pumper	Missouri
38	Ruth Bushman	38	Wife	—	Missouri
39	Mary Ruth Bushman	11	Daughter	—	Missouri
40	Jerry Allen Bushman	4	Son	—	Colorado

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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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