Mary Williamson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Caroline-County, Maryland

Our Model Tree links this Mary Williamson across the 1920, 1930 and 1940 US Censuses in Caroline-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1868), then head of a 4-person household.

Age 72 b. ~1868 Female Spouse Born: Maryland Married

1940 Census Record Details

Census Year	1940
Location	Caroline-County, Maryland
Surname	Williamson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	72
Marital Status	Married
Birthplace	Maryland
1935 Residence (City)	Federalsburg Town
1935 Residence (County)	Caroline
Additional Details
Occupation	At Home
Industry	NP
Class of Worker	0
Highest Grade	No 7
1935 Residence	Same House
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland
Occupation	At Home
Township / Ward	Federalsburg Town
Est. Birth Year	~1868

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Margaret Williamson	Daughter	—	16	~1924
V Williamson	Head	—	62	~1878
Hersey Williamson	Son	—	22	~1918
Mary Williamson	Spouse	—	72	~1868

Census Appearances

1920

Caroline, Maryland

Spouse, age 55

Caroline, Maryland · implied b. ~1865 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Williamson
Given Name	Mary E.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	55
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

Caroline, Maryland

Spouse, age 63

Caroline, Maryland · implied b. ~1867 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Williamson
Given Name	Mary E
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	63
Marital Status	Married
Birthplace	Maryland
Age at First Marriage	29
Father's Birthplace	Maryland
Mother's Birthplace	Maryland
Can Read/Write	Yes
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

1940

Caroline-County, Maryland

Spouse, age 72

Caroline-County, Maryland · implied b. ~1868 — 4 household members

Surname	Williamson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	72
Marital Status	Married
Birthplace	Maryland
1935 Residence (City)	Federalsburg Town
1935 Residence (County)	Caroline
Occupation	At Home
Industry	NP
Class of Worker	0
Highest Grade	No 7
1935 Residence	Same House
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

Model Tree

Linked across censuses

Our Model Tree links Mary Williamson 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 Williamson

Spouse · 1940 · age 72 · b. ~1868 · 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 — Caroline-County, Maryland Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01543-00575)

Line	Name	Age	Relation	Occupation	Birthplace
1	Anne C Turner	31	Wife	—	Ohio
2	Donald Turner	8	Son	—	Maryland
3	Patricia Turner	8	Daughter	—	Maryland
4	Calvin Turner	5	Son	—	Maryland
5	Wanda Turner	4	Daughter	—	Maryland
6	Carlilie Roe	68	Head	Housewife	Maryland
7	Harvey Robinson	30	Boarder	Barber	Maryland
8	Wilmer Nagel	22	Boarder	Mechanic	Montana
9	Ralph Williamson	22	Boarder	Factory	Maryland
10	Sammy Galante	25	Boarder	Printer	West Virginia
11	Minder Reynolds	34	Boarder	Carpenter	Delaware
12	Kennard Darling	31	Head	Baker	Delaware
13	Mary Darling	27	Wife	At Home	Delaware
14	Bobby Darling	4	Son	—	Delaware
15	Gerald Darling	3	Daughter	—	Delaware
16	Gerald Briggs	35	Head	Teacher	Maryland
17	Evelyn Briggs	30	Wife	At Home	Maryland
18	M. Emory Burkhardt	27	Boarder	Schoolteacher	Delaware
19	Velma B Burkhardt	21	Boarder	At Home	Virginia
20	William Wheatley	50	Head	Foreman	Maryland
21	Annie B Wheatley	50	Wife	At Home	New Jersey
22	Jean H Wheatley	20	Daughter	In College	Maryland
23	William Wheatley	15	Son	In School	Maryland
24	Earl Bradley	49	Head	Fruit & Produce Buyer	Maryland
25	A. Bessie Bradley	40	Wife	At Home	Maryland
26	Katherine Bradley	5	Daughter	—	Maryland
27	Wilmer Christopher	49	Head	Pressman	Maryland
28	Ella Christopher	49	Wife	At Home	Maryland
29	Jackie Christopher	10	Grandson	In School	Maryland
30	Harry Speier	70	Head	Brokerage	Delaware
31	Bessie Speier	67	Wife	At Home	Maryland
32	Annie Russell	71	Head	At Home	Maryland
33	Margaret Russell	44	Step-Daughter	Laundress	Maryland
34	Allen Phillips	28	Head	Factory	Maryland
35	Gladys Phillips	27	Wife	Factory	Pennsylvania
36	V. G. Williamson	62	Head	Store Keeper	Maryland
37	Mary Williamson THIS PERSON	72	Wife	At Home	Maryland
38	Hersey Williamson	22	Son	Undertaker	Maryland
39	Margaret Williamson	16	Daughter	In School	Maryland
40	Wilder Andrew	68	Head	—	Maryland

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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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