MS
Mary Summers — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Charles-County, Maryland
Our Model Tree links this Mary Summers across the 1930 and 1940 US Censuses in Charles-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Charles-County, Maryland |
| Surname | Summers |
| Given Name | Mary Jane |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 8 |
| 1935 Residence (County) | Charles |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Election District 8 |
| Est. Birth Year | ~1929 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ellen Summers | Daughter | — | 8 | ~1932 |
| Betty Summers | Daughter | — | 13 | ~1927 |
| Mary Summers | Daughter | — | 11 | ~1929 |
| Joan Summers | Daughter | — | 14 | ~1926 |
| William Summers | Head | — | 35 | ~1905 |
| Mary Middleton | Other | — | 17 | ~1923 |
| John Summers | Son | — | 9 | ~1931 |
| Thomas Summers | Son | — | 5 | ~1935 |
| Arthur Summers | Son | — | 7 | ~1933 |
| Marian Summers | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Charles, Maryland
Daughter, age 6
Charles, Maryland · implied b. ~1924 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Summers |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Charles-County, Maryland
Daughter, age 11
Charles-County, Maryland · implied b. ~1929 — 10 household members
| Surname | Summers |
| Given Name | Mary Jane |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 8 |
| 1935 Residence (County) | Charles |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| 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 Summers across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Summers
Daughter · 1940 · age 11 · b. ~1929 · Maryland
★ You are viewing this record
Sibling
Joan Summers
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Summers
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Summers
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Summers
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Summers
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Summers
Sibling · 1940 · age 8
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 — 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-t0627-01546-00414)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret Stone Street | 17 | daughter | — | Maryland |
| 42 | Ethel Stone Street | 16 | daughter | — | Maryland |
| 43 | Leo Stone Street | 13 | son | — | Maryland |
| 44 | Joan Stone Street | 11 | daughter | — | Maryland |
| 45 | Mary E. Stone Street | 69 | mother | — | Maryland |
| 46 | Claude Stone Street | 44 | brother | Helper | Maryland |
| 47 | Frank Johnson | 50 | Head | Labourer | Maryland |
| 48 | Josephine Johnson | 40 | Wife | — | Maryland |
| 49 | Alex Adams | 52 | Head | Labourer | Maryland |
| 50 | Ruth Adams | 43 | Wife | — | Maryland |
| 51 | Joseph Adams | 21 | son | Labourer | Maryland |
| 52 | Harking Adams | 18 | son | Labourer | Maryland |
| 53 | Mary H. Adams | 12 | daughter | — | Maryland |
| 54 | Susie Adams | 9 | daughter | — | Maryland |
| 55 | Dorothy M. Adams | 5 | daughter | — | Maryland |
| 56 | Alice E. Adams | 2 | daughter | — | Maryland |
| 57 | William H. Butler | 36 | Head | Farmer | Maryland |
| 58 | Mary H. Butler | 25 | Wife | — | Maryland |
| 59 | Irma Butler | 7 | daughter | — | Maryland |
| 60 | Dorothy C. Butler | 6 | daughter | — | Maryland |
| 61 | Jean L. Butler | 2 | daughter | — | Maryland |
| 62 | William H. Butler | 1 | son | — | Maryland |
| 63 | James Butler | 31 | brother | Labourer | Maryland |
| 64 | William G. Summers | 35 | Head | Fisher | Maryland |
| 65 | Marian Summers | 40 | Wife | Office Work | Maryland |
| 66 | Joan Summers | 14 | daughter | — | Maryland |
| 67 | Betty Lee Summers | 13 | daughter | — | Maryland |
| 68 | Mary Jane Summers THIS PERSON | 11 | daughter | — | Maryland |
| 69 | John D. Summers | 9 | son | — | Maryland |
| 70 | Ellen Summers | 8 | daughter | — | Maryland |
| 71 | Arthur Summers | 7 | son | — | Maryland |
| 72 | Thomas Summers | 5 | son | — | Maryland |
| 73 | Mary M. Middleton | 17 | Maid | House Work | Maryland |
| 74 | Benedict Brooks | 39 | Head | Labourer | Maryland |
| 75 | Mary Brooks | 33 | Wife | — | Maryland |
| 76 | Helen H. Brooks | 2 | daughter | — | Maryland |
| 77 | Grant Thomas | 33 | Head | Labourer | Maryland |
| 78 | Grace Thomas | 59 | Wife | House Work | Maryland |
| 79 | Benjamin Edelen | 34 | Head | Labourer | Maryland |
| 80 | Rosalie Edelen | 31 | Wife | — | Maryland |
Related Census Records
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)