Mary Leonard — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Dorchester-County, Maryland

Our Model Tree links this Mary Leonard across the 1920, 1930 and 1940 US Censuses in Dorchester-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1861), then head of a 3-person household.

Age 79 b. ~1861 Female Head Born: Maryland Widowed

1940 Census Record Details

Census Year	1940
Location	Dorchester-County, Maryland
Surname	Leonard
Given Name	Mary (Mollie)
Relationship to Head	Head
Sex	F
Color / Race	White
Age	79
Marital Status	Widowed
Birthplace	Maryland
1935 Residence (City)	Cambridge
1935 Residence (County)	Dorchester
Additional Details
Hours Worked	7
Highest Grade	8
1935 Residence	Same place
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland
Township / Ward	Cambridge
Est. Birth Year	~1861

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Louise Leonard	Daughter	—	45	~1895
Grace Leonard	Daughter	—	53	~1887
Mary Leonard	Head	—	79	~1861

Census Appearances

1920

Dorchester, Maryland

Spouse, age 59

Dorchester, Maryland · implied b. ~1861 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Leonard
Given Name	Mary V.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	59
Marital Status	Married
Birthplace	Maryland
Father's Birthplace	Maryland
Mother's Birthplace	Maryland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

1930

Dorchester, Maryland

Other, age 69

Dorchester, Maryland · implied b. ~1861 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Leonard
Given Name	Mary V.
Relationship to Head	Wife-H
Sex	F
Color / Race	White
Age	69
Marital Status	Married
Birthplace	Maryland
Age at First Marriage	25
Father's Birthplace	Maryland
Mother's Birthplace	Maryland
Can Read/Write	Yes
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

1940

Dorchester-County, Maryland

Head, age 79

Dorchester-County, Maryland · implied b. ~1861 — 3 household members

Surname	Leonard
Given Name	Mary (Mollie)
Relationship to Head	Head
Sex	F
Color / Race	White
Age	79
Marital Status	Widowed
Birthplace	Maryland
1935 Residence (City)	Cambridge
1935 Residence (County)	Dorchester
Hours Worked	7
Highest Grade	8
1935 Residence	Same place
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

Model Tree

Linked across censuses

Our Model Tree links Mary Leonard 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 Leonard

Head · 1940 · age 79 · b. ~1861 · Maryland

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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 — Dorchester-County, Maryland Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01547-00263)

Line	Name	Age	Relation	Occupation	Birthplace
41	Howard Phillips	49	Head	President	Maryland
42	Anna Ruth N. Phillips	41	Wife	Housewife	Maryland
43	Loula Adams	48	Head	Owner-Oper.	Maryland
44	Evelyn Adams Smith	29	Daughter	Part Time Clerk	Maryland
45	Wallace Jr. Smith	10	Grandson	—	Maryland
46	Luther Parks	39	Boarder	Merchant-Part.	Maryland
47	James A. Mcallister	39	Head	Lawyer	Maryland
48	Agnes Phelps Mcallister	38	Wife	Housewife	Maryland
49	James A. Jr. Mcallister	13	Son	—	Maryland
50	William Wallace Mcallister	12	Son	—	Maryland
51	Joseph Phelps Mcallister	5	Son	—	Maryland
52	Father Benjamin	None	M	Dorchester Co. Md.	—
53	Susan Benjamin	63	Mother	Housewife	Maryland
54	Addie Hall Barton	58	Head	Housewife	Maryland
55	Conrad J. Rosemere	30	Son-in-law	Sea Food Dealer	California
56	Frederick B. Rosemere	25	Daughter	Housewife	District Columbia
57	Conrad J. Jr. Rosemere	3	Grandson	—	Maryland
58	Fannie Barton	68	Friend	—	Maryland
59	Carlton M. Dunn	47	Head	—	Maryland
60	Mary Lee Roberts Dunn	45	Wife	Book Keeper	Maryland
61	T. Benjamin Brown	53	Head	Postal Clerk	Maryland
62	Florence Brown	58	Wife	Housewife	Virginia
63	George Brown Rollins	38	Head	—	Maryland
64	Audrey Tolley Rollins	36	Wife	Ass'T Clerk	Maryland
65	Chaplain C. Hicks	50	Head	Retired Captain	Maryland
66	Elizabeth C. Hicks	45	Wife	Housewife	District Columbia
67	Elizabeth H. Hicks	17	Daughter	—	Maryland
68	Mary H. Goldsborough	77	Sister-in-law	—	Maryland
69	Kate Rollins Leonard	66	Head	Owner, Oper.	Maryland
70	Elizabeth Vane	68	Head	Owner Oper.	Maryland
71	Hattie E. Brooks	45	Head	Home Economics Tea.	Colorado
72	Virginia Ethel Vane	27	Head	Social Worker	Maryland
73	Mary (Mollie) Leonard THIS PERSON	79	Head	—	Maryland
74	Grace Leonard	53	Daughter	Part Time Office Wk.	Maryland
75	Louise Leonard	45	Daughter	Deputy Treasurer	Maryland
76	Charles P. Robertson	54	Head	—	New York
77	Reese Lucas Robertson	48	Wife	Housewife	Virginia
78	Reese Lucas Jr. Robertson	10	Daughter	—	Maryland
79	William Robertson	7	Son	—	Maryland
80	Ruth Twyman	15	Daughter	—	Virginia

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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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