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James Dunlap — 1940 US Census Record
Model Tree available1940 United States Federal Census · Morgan-County, Illinois
Our Model Tree links this James Dunlap across the 1910, 1920, 1930 and 1940 US Censuses in Morgan-County, Illinois (XGBoost, ~Confirmed), with identified parents Alvin & G — first a head (b.~1905), then head of a 4-person household.
Age 35
b. ~1905
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Morgan-County, Illinois |
| Surname | Dunlap |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Jacksonville Election Precinct |
| 1935 Residence (County) | Morgan |
| Additional Details | |
| Occupation | Accountant |
| Industry | Ice Supply Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Accountant |
| Township / Ward | Jacksonville Election Precinct |
| Est. Birth Year | ~1905 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Gladys Dunlap | Spouse | — | 26 | ~1914 |
| Janet Dunlap | Daughter | — | 4 | ~1936 |
| Barbara Dunlap | Daughter | — | 1 | ~1939 |
| James Dunlap | Head | — | 35 | ~1905 |
Census Appearances
1910
Morgan, Illinois
Son, age 5
Morgan, Illinois · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunlap |
| Given Name | James Alva |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Morgan, Illinois
Son, age 15
Morgan, Illinois · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunlap |
| Given Name | James R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Morgan, Illinois
Son, age 25
Morgan, Illinois · implied b. ~1905 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunlap |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Book-keeper |
| Industry | Grain Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Morgan-County, Illinois
Head, age 35
Morgan-County, Illinois · implied b. ~1905 — 4 household members
| Surname | Dunlap |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Jacksonville Election Precinct |
| 1935 Residence (County) | Morgan |
| Occupation | Accountant |
| Industry | Ice Supply Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 James Dunlap across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alvin Dunlap (~0.92 confidence) and father G Dunlap (~0.92 confidence) and father George Dunlap (~0.92 confidence) and mother E Dunlap (~0.92 confidence) and mother Edna Dunlap (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alvin Dunlap
b. ~1871
Source father
● Household
· direct · ~0.92
Father
G Dunlap
b. ~1871
Source father
● Household
· direct · ~0.92
Father
George Dunlap
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
E Dunlap
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Edna Dunlap
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Dunlap
Head · 1940 · age 35 · b. ~1905 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Morgan-County, Illinois
Open full size
1940 US Federal Census — Morgan-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00861-00760)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donna Smock | 5 | Daughter | — | Illinois |
| 2 | Ella Mae Smock | 4 | Daughter | — | Illinois |
| 3 | Harris Strawn | 51 | Head | Mgr. Grain Office | Illinois |
| 4 | Edith Strawn | 51 | Wife | — | Illinois |
| 5 | Helen Strawn | 26 | Daughter | Teacher | Illinois |
| 6 | Frank Hanson | 63 | Head | Farmer | Illinois |
| 7 | Sarah Hanson | 55 | Wife | — | Illinois |
| 8 | Eugene Keefe | 49 | Head | Rural Carrier | Wisconsin |
| 9 | Nellie Keefe | 47 | Wife | — | Illinois |
| 10 | Homer Potter | 57 | Head | Bond Salesman | Illinois |
| 11 | Bertha Potter | 53 | Wife | Music Teacher | Illinois |
| 12 | Eugene Potter | 27 | Son | Bookkeeper | Illinois |
| 13 | Sarah J. Potter | 80 | Mother | — | Illinois |
| 14 | Hugo Schenhoff | 32 | Head | Teacher | Illinois |
| 15 | Mary Lou Schenhoff | 28 | Wife | — | Illinois |
| 16 | Fred Tewksbury | 71 | Head | Truck Farmer | Illinois |
| 17 | Mary Tewksbury | 68 | Wife | — | Illinois |
| 18 | William Coverley | 73 | Head | Retail Grocer | England |
| 19 | Nora B. Coverley | 73 | Wife | — | Illinois |
| 20 | Hazel Butterfield | 29 | Daughter | Saleslady | Illinois |
| 21 | Helen Butterfield | 1 | Granddaughter | — | Illinois |
| 22 | James Dunlap THIS PERSON | 35 | Head | Accountant | Illinois |
| 23 | Gladys Dunlap | 26 | Wife | — | Illinois |
| 24 | Janet Dunlap | 4 | Daughter | — | Illinois |
| 25 | Barbara Dunlap | 1 | Daughter | — | Illinois |
| 26 | Otho Pullam | 50 | Head | Teamster | Illinois |
| 27 | Russell Pullam | 19 | Son | Janitor | Illinois |
| 28 | Nellie Scholfield | 57 | Sister | Hand Worker | Kansas |
| 29 | Ella Zimmer | 45 | Head | Laundry | Illinois |
| 30 | Margaret Zimmer | 19 | Daughter | Waitress | Illinois |
| 31 | Robert Zimmer | 17 | Son | Farm Hand | Illinois |
| 32 | Gladys Zimmer | 14 | Daughter | Waitress | Illinois |
| 33 | William Willis | 40 | Head | Janitor | Arkansas |
| 34 | Helen Willis | 37 | Wife | Laundress | Illinois |
| 35 | Fred Still | 54 | Head | Bookkeeper | Illinois |
| 36 | Delilah Still | 41 | Wife | — | Illinois |
| 37 | Rowena Still | 21 | Daughter | Secretary | Illinois |
| 38 | Harry Hall | 32 | Head | Mgr. Impl. Co. | Illinois |
| 39 | Nessie Hall | 25 | Wife | — | Illinois |
| 40 | Susan Jane Hall | 2 | Daughter | — | Illinois |
Pedigree Summary
James
Gen 1 · 5 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)