MH
Mary Hayden — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Charles-County, Maryland
Our Model Tree links this Mary Hayden across the 1920, 1930 and 1940 US Censuses in Charles-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1878), then head of a 5-person household.
Age 62
b. ~1878
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Charles-County, Maryland |
| Surname | Hayden |
| Given Name | Mary C. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election Dist. 1 La Plata |
| 1935 Residence (County) | Charles |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Election Dist 1 La Plata |
| Est. Birth Year | ~1878 |
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 |
|---|---|---|---|---|
| Kenneth Hayden | Son | — | 21 | ~1919 |
| Marjorie Hayden | Daughter | — | 35 | ~1905 |
| Rita Hayden | Daughter | — | 24 | ~1916 |
| Morris Hayden | Head | — | 64 | ~1876 |
| Mary Hayden | Spouse | — | 62 | ~1878 |
Census Appearances
1920
Charles, Maryland
Spouse, age 41
Charles, Maryland · implied b. ~1879 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayden |
| Given Name | Mary C |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| 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
Charles, Maryland
Spouse, age 51
Charles, Maryland · implied b. ~1879 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayden |
| Given Name | Mary C |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 18 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Charles-County, Maryland
Spouse, age 62
Charles-County, Maryland · implied b. ~1878 — 5 household members
| Surname | Hayden |
| Given Name | Mary C. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election Dist. 1 La Plata |
| 1935 Residence (County) | Charles |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Hayden 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 Hayden
Spouse · 1940 · age 62 · b. ~1878 · 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 — Charles-County, Maryland
Open full size
1940 US Federal Census — Charles-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01546-00045)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Murphy | 27 | son | Labourer | Maryland |
| 2 | Francis Murphy | 23 | son | Labourer | Maryland |
| 3 | Henry H. Lyon | 67 | Head | Farmer | Maryland |
| 4 | Olive G. Lyon | 62 | wife | — | Maryland |
| 5 | Paul Jameson | 48 | Head | Engineer | Maryland |
| 6 | Mabel Jameson | 47 | wife | — | Maryland |
| 7 | Virginia Jameson | 18 | daughter | — | Maryland |
| 8 | Annie Jameson | 17 | daughter | — | Maryland |
| 9 | Edward Jameson | 15 | son | — | Maryland |
| 10 | Hayden Jameson | 13 | son | — | Maryland |
| 11 | Mary L. Jameson | 10 | daughter | — | Maryland |
| 12 | Eliza Hayden | 89 | mother-in-law | — | Maryland |
| 13 | Charles Rice | 53 | Head | Farmer | Maryland |
| 14 | Catherine Rice | 45 | wife | — | Maryland |
| 15 | Francis Rice | 24 | son | Mechanic | Maryland |
| 16 | Agnes Rice | 21 | daughter | — | Maryland |
| 17 | Dora Rice | 70 | mother | — | Maryland |
| 18 | George Lynch | 51 | lodger | Mechanic | Maryland |
| 19 | Morris D. Hayden | 64 | Head | Merchant | Maryland |
| 20 | Mary C. Hayden THIS PERSON | 62 | wife | — | Maryland |
| 21 | Marjorie Hayden | 35 | daughter | Carpenter | Maryland |
| 22 | Rita Hayden | 24 | daughter | Teacher | Maryland |
| 23 | Kenneth Hayden | 21 | son | Clerk & Labourer | Maryland |
| 24 | Albert Elder | 46 | Head | Carpenter | Maryland |
| 25 | Genevieve Elder | 45 | wife | — | Maryland |
| 26 | Alma Elder | 17 | daughter | Nurse'S Aid | Maryland |
| 27 | Cordelia Elder | 16 | daughter | — | Maryland |
| 28 | Albert Jr. Elder | 13 | son | — | Maryland |
| 29 | Agnes Elder | 11 | daughter | — | Maryland |
| 30 | Theresia Elder | 10 | daughter | — | Maryland |
| 31 | Dutton Elder | 10 | son | — | Maryland |
| 32 | Patricia Elder | 8 | daughter | — | Maryland |
| 33 | Robert Elder | 5 | son | — | Maryland |
| 34 | Allen Elder | 3 | son | — | Maryland |
| 35 | Nora Elder | 1 | daughter | — | Maryland |
| 36 | John M. Simms | 56 | Head | Merchant | Maryland |
| 37 | Florence Simms | 46 | wife | — | Maryland |
| 38 | Jean Simms | 9 | daughter | — | Maryland |
| 39 | Charles F. Simms | 20 | son | — | Maryland |
| 40 | Maudine Spencer | 45 | Head | — | Maryland |
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)