MR
Mary Riley — 1940 US Census Record
Model Tree available1940 United States Federal Census · Charleston-County, South Carolina
Our Model Tree links this Mary Riley across the 1920, 1930 and 1940 US Censuses in Charleston-County, South Carolina (XGBoost, ~Confirmed), with identified parents Andrew & Mary — first a daughter (b.~1903), then head of a 7-person household.
Age 37
b. ~1903
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Charleston-County, South Carolina |
| Surname | Riley |
| Given Name | Mary Emily |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Charleston City |
| 1935 Residence (County) | Charleston |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 34 |
| Income (1939) | 1500 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Teacher |
| Township / Ward | Charleston City |
| Est. Birth Year | ~1903 |
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 |
|---|---|---|---|---|
| Margaret Riley | Daughter | — | 41 | ~1899 |
| Anne Riley | Daughter | — | 35 | ~1905 |
| Mary Riley | Daughter | — | 37 | ~1903 |
| Mary Riley | Head | — | 57 | ~1883 |
| Rosa Oliver | Other | — | 56 | ~1884 |
| Henry Riley | Son | — | 33 | ~1907 |
| Audrey Riley | Son | — | 39 | ~1901 |
Census Appearances
1920
Charleston, South …
Daughter, age 17
Charleston, South Carolina · implied b. ~1903 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Charleston, South …
Daughter, age 27
Charleston, South Carolina · implied b. ~1903 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Charleston-County, South …
Daughter, age 37
Charleston-County, South Carolina · implied b. ~1903 — 7 household members
| Surname | Riley |
| Given Name | Mary Emily |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Charleston City |
| 1935 Residence (County) | Charleston |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 34 |
| Income (1939) | 1500 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
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 Riley across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Andrew Riley (~0.92 confidence) and mother Mary Riley (~0.92 confidence) and mother Mary Riley (~0.92 confidence) and mother Mary Riley (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Riley
b. ~1856
Source father
● Household
· direct · ~0.92
Mother
Mary Riley
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Mary Riley
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Mary Riley
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Riley
Daughter · 1940 · age 37 · b. ~1903 · South Carolina
★ You are viewing this record
Sibling
Henry Riley
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Audrey Riley
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anne Riley
Sibling · 1940 · age 35
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Riley
Sibling · 1940 · age 41
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 — Charleston-County, South Carolina
Open full size
1940 US Federal Census — Charleston-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03793-00479)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Julia B. Hillyard | 52 | Head | Baker | South Carolina |
| 2 | Walter Sessions | 27 | Lodger | Baker | South Carolina |
| 3 | Mary E. Riley | 57 | Head | — | South Carolina |
| 4 | Margaret O. Riley | 41 | Daughter | Social Service Worker | South Carolina |
| 5 | Audrey J. Riley | 39 | Son | Business Manager | South Carolina |
| 6 | Mary Emily Riley THIS PERSON | 37 | Daughter | Teacher | South Carolina |
| 7 | Anne Riley | 35 | Daughter | Teacher | South Carolina |
| 8 | Henry Oliver Riley | 33 | Son | Auditor | South Carolina |
| 9 | Rosa F. D. Oliver | 56 | Sister | — | South Carolina |
| 10 | Edward Snell Evans | 27 | Head | Housing Engineer | South Carolina |
| 11 | Mary E. Evans | 27 | Wife | Beautician | South Carolina |
| 12 | Wilfred P. Adams | 25 | Head | Shipfitter'S Helper | South Carolina |
| 13 | Peggy B. Adams | 23 | Wife | Beautician | South Carolina |
| 14 | Amelia E. Adams | 1 | Daughter | — | South Carolina |
| 15 | Israel Friedburg | 55 | Head | Owner - Salesman | South Carolina |
| 16 | Pearl R. Friedburg | 45 | Wife | — | South Carolina |
| 17 | William M. Zeigler | 31 | Head | Salesman | South Carolina |
| 18 | Elizabeth B. Zeigler | 27 | Wife | — | South Carolina |
| 19 | Elizabeth Jean Zeigler | 5 | Daughter | — | South Carolina |
| 20 | Llewellyn Redd | 34 | Lodger | Beautician | South Carolina |
| 21 | Claudia Mundy | 21 | Lodger | Waitress | South Carolina |
| 22 | M. Kate Wells | 65 | Head | Secretary | Virginia |
| 23 | William D. Rivers | 38 | Head | Proprietor | South Carolina |
| 24 | Gladys S. Rivers | 33 | Wife | — | South Carolina |
| 25 | Delores Rivers | 3 | Daughter | — | South Carolina |
| 26 | Tom M. Sawyer | 23 | Head | Manager Soda Fountain | South Carolina |
| 27 | Edna S. D. Sawyer | 21 | Wife | — | South Carolina |
| 28 | Lois E. Sawyer | 1 | Daughter | — | South Carolina |
| 29 | Margaret B. Jermow | 80 | Head | — | South Carolina |
| 30 | Edna M. Jermow | 48 | Niece | — | South Carolina |
| 31 | George A. Morgan | 63 | Head | Helper | Maryland |
| 32 | Eva D. Morgan | 69 | Wife | — | Massachusetts |
| 33 | George H. Morgan | 12 | Son | — | South Carolina |
| 34 | Frank M. O'Day | 28 | Lodger | Salesman | Georgia |
| 35 | Thelma G. O'Day | 24 | Lodger | — | Georgia |
| 36 | Theresa B. Rickman | 31 | Lodger | Hopper Feeder | South Carolina |
| 37 | Louis Frank Leopold | 42 | Lodger | Plumber | Louisiana |
| 38 | John E. Berry | 53 | Lodger | Painter | South Carolina |
| 39 | William Berryhill | 38 | Head | Musician First Class | Oklahoma |
| 40 | Margaret Berryhill | 38 | Wife | — | New York |
Related Census Records
Pedigree Summary
Mary + 4 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)