DP
David Parker — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mahoning-County, Ohio
Our Model Tree links this David Parker across the 1920, 1930 and 1940 US Censuses in Mahoning-County, Ohio (XGBoost, ~Confirmed), with identified parents George & George — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mahoning-County, Ohio |
| Surname | Parker |
| Given Name | David T. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Youngstown |
| 1935 Residence (County) | Mahoning |
| Additional Details | |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 8 |
| Income (1939) | 1100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Laborer |
| Township / Ward | Youngstown |
| Est. Birth Year | ~1917 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to David | Age | Birth yr |
|---|---|---|---|---|
| David Parker | Son | — | 23 | ~1917 |
| George Parker | Head | — | 20 | ~1920 |
| Gordon Parker | Son | — | 21 | ~1919 |
| Sarah Parker | Spouse | — | 52 | ~1888 |
| Josephine Delano | Other | — | 21 | ~1919 |
| Rose Delano | Other | — | 26 | ~1914 |
Census Appearances
1920
Mahoning, Ohio
Son, age 3
Mahoning, Ohio · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Parker |
| Given Name | David |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | England |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Mahoning, Ohio
Son, age 13
Mahoning, Ohio · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Parker |
| Given Name | David G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | England |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Mahoning-County, Ohio
Son, age 23
Mahoning-County, Ohio · implied b. ~1917 — 6 household members
| Surname | Parker |
| Given Name | David T. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Youngstown |
| 1935 Residence (County) | Mahoning |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 8 |
| Income (1939) | 1100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 David Parker across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Parker (~0.92 confidence) and father George Parker (~0.92 confidence) and father George Parker (~0.50 confidence) and mother Bertha Parker (~0.92 confidence) and mother Sarah Parker (~0.92 confidence) and mother Sarah Parker (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.85
Father
George Parker
b. ~1890
Source father
● Household
· direct · ~0.92
Father
George Parker
b. ~1870
Source father
● Household
· direct · ~0.92
Father
George Parker
b. ~1920
Source father
● Household
· direct · ~0.5
Mother
Bertha Parker
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Sarah Parker
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Sarah Parker
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
David Parker
Son · 1940 · age 23 · b. ~1917 · Ohio
★ You are viewing this record
Sibling
Gordon Parker
Sibling · 1940 · age 21
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 — Mahoning-County, Ohio
Open full size
1940 US Federal Census — Mahoning-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03271-00289)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mildred Griffith | 32 | Daughter | Clerk | Ohio |
| 42 | Fred A. Romich | 59 | Head | Manager | Penn |
| 43 | Mabelle Romich | 55 | Wife | — | Penn |
| 44 | George W. Parker | 20 | Head | — | England |
| 45 | Sarah H. Parker | 52 | Wife | — | Ohio |
| 46 | David T. Parker THIS PERSON | 23 | Son | Laborer | Ohio |
| 47 | Gordon B. Parker | 21 | Son | Clerk | Ohio |
| 48 | Rose Delano | 26 | Lodger | Saleslady | Ohio |
| 49 | Josephine Delano | 21 | Lodger | Light Maker | Ohio |
| 50 | Ralph E. Frye | 43 | Head | Plant Supt. | Penn |
| 51 | Nell E. Frye | 47 | Wife | — | Penn |
| 52 | Ralph E. Jr. Frye | 21 | Son | Clerk | Penn |
| 53 | Alice M. Frye | 19 | Daughter | New Worker | Penn |
| 54 | Lillian G. Frye | 16 | Daughter | — | Penn |
| 55 | Colvin G. Frye | 11 | Son | — | Penn |
| 56 | Anne E. Frye | 8 | Daughter | — | Kentucky |
| 57 | Alice M. Walthour | 66 | Mother-in-law | — | Penn |
| 58 | Reed Pennel | 32 | Head | Heating Eng. | Indiana |
| 59 | Violet Pennel | 32 | Wife | — | Ohio |
| 60 | Judith L. Pennel | 3 | Daughter | — | Ohio |
| 61 | Janet Pennel | 0 | Daughter | — | Ohio |
| 62 | Josephine Fink | 21 | Servant | Servant | Ohio |
| 63 | Abraham S. Jacob | 36 | Head | Owner-Mgr. | Iraq |
| 64 | Bell S. Jacob | 34 | Wife | — | Penn |
| 65 | Stanley L. Jacob | 16 | Son | — | Penn |
| 66 | Robert S. Jacob | 13 | Son | — | Penn |
| 67 | Rita A. Jacob | 11 | Daughter | — | Penn |
| 68 | Joan G. Delaney | 60 | Housekpr. | Housework | Scotland |
| 69 | Ruth G. Rosenthal | 22 | Niece | Clerk | Penn |
| 70 | Fred E. Elder | 34 | Head | Dentist | Hungary |
| 71 | Florence L. Elder | 34 | Wife | — | New York |
| 72 | Charles D. Skipp | 31 | Head | Crancman | Ohio |
| 73 | Robert Skipp | 29 | Brother | Gen-Laborer | Ohio |
| 74 | Margaret A. Lenhart | 42 | Sister | New Worker | Penn |
| 75 | Marjorie Lenhart | 7 | Niece | — | Ohio |
| 76 | Anna M. Lenhart | 67 | Mother | — | Penn |
| 77 | Laura J. Blase | 60 | Head | Optometrist | Penn |
| 78 | Extra Line Blase | None | — | — | — |
| 79 | Edwin L. Prinsen | 47 | Head | Manager | Wisconsin |
| 80 | Hazel Prinsen | 40 | Wife | — | Minnesota |
Pedigree Summary
David + 1 sibling
Gen 1 · 6 parents
~0.85
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)