MK
Margaret King — 1940 US Census Record
Model Tree available1940 United States Federal Census · Rock-Island-County, Illinois
Our Model Tree links this Margaret King across the 1920, 1930 and 1940 US Censuses in Rock-Island-County, Illinois (XGBoost, ~Confirmed), with identified parents Louis & Thomas — first a daughter (b.~1916), then head of a 3-person household.
Age 24
b. ~1916
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-Island-County, Illinois |
| Surname | King |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Moline |
| 1935 Residence (County) | Rock Island |
| Additional Details | |
| Occupation | Clerk office |
| Industry | Whl. Petroleum |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 881 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk Office |
| Township / Ward | Moline |
| Est. Birth Year | ~1916 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret King | Daughter | — | 24 | ~1916 |
| Louis King | Head | — | 53 | ~1887 |
| Rilla King | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Rock Island, …
Daughter, age 3
Rock Island, Illinois · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Rock Island, …
Daughter, age 13
Rock Island, Illinois · implied b. ~1917 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Rock-Island-County, Illinois
Daughter, age 24
Rock-Island-County, Illinois · implied b. ~1916 — 3 household members
| Surname | King |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Moline |
| 1935 Residence (County) | Rock Island |
| Occupation | Clerk office |
| Industry | Whl. Petroleum |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 881 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| 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 Margaret King across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Louis King (~0.92 confidence) and father Thomas King (~0.92 confidence) and father Thomas King (~0.92 confidence) and mother Rilla King (~0.92 confidence) and mother Martha King (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Louis King
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Thomas King
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Thomas King
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Rilla King
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Martha King
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret King
Daughter · 1940 · age 24 · b. ~1916 · 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 — Rock-Island-County, Illinois
Open full size
1940 US Federal Census — Rock-Island-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00877-00573)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lucile Seger | 31 | Wife | Finishing Dept. | Illinois |
| 42 | Alene Seger | 5 | Daughter | — | Missouri |
| 43 | Muriel Seger | 4 | Son | — | Illinois |
| 44 | Walter Muehleman | 23 | Head | Labor. | Illinois |
| 45 | Emma Muehleman | 22 | Wife | — | Illinois |
| 46 | Joyce Muehleman | 1 | Daughter | — | Illinois |
| 47 | Louis King | 53 | Head | Machine Operator | Illinois |
| 48 | Rilla King | 46 | Wife | — | Illinois |
| 49 | Margaret King THIS PERSON | 24 | Daughter | Clerk Office | Illinois |
| 50 | Elbert Dillingham | 51 | Head | Machine Operator | Kentucky |
| 51 | Ina Dillingham | 44 | Wife | Saleslady | Kentucky |
| 52 | Joseph H. Reinier | 27 | Head | Moulder | Iowa |
| 53 | Doris Reinier | 19 | Wife | — | Iowa |
| 54 | Karen Reinier | 0 | Daughter | — | Iowa |
| 55 | Tennil Dye | 48 | Head | Machinist | Illinois |
| 56 | Mary Dye | 43 | Wife | — | Kansas |
| 57 | Clark William Dye | 20 | Son | Watchmaker | Illinois |
| 58 | William Graves | 25 | Head | Apprentice Sheet Metal | Iowa |
| 59 | Inez Graves | 24 | Wife | — | Missouri |
| 60 | Richard Graves | 1 | Son | — | Iowa |
| 61 | Morris Crowe | 53 | Head | Setting Forms | Illinois |
| 62 | Effie Crowe | 48 | Wife | — | Iowa |
| 63 | Frank Crowe | 13 | Son | — | Iowa |
| 64 | Guy Crowe | 12 | Son | — | Iowa |
| 65 | Kenneth Crowe | 10 | Son | — | Illinois |
| 66 | Belva Crowe | 7 | Daughter | — | Illinois |
| 67 | Lloyd Koshals | 24 | Head | Labor | Illinois |
| 68 | Lorine Koshals | 19 | Wife | — | Iowa |
| 69 | Charles Koshals | 1 | Son | — | Illinois |
| 70 | Ollie Wilson | 45 | Head | Labor. | Indiana |
| 71 | Annie Wilson | 31 | Wife | — | Kentucky |
| 72 | Robert Wilson | 2 | Son | — | Iowa |
| 73 | John Wilson | 1 | Son | — | Kentucky |
| 74 | Vern Bickford | 31 | Head | Painter | Iowa |
| 75 | Bessie Bickford | 29 | Wife | — | Iowa |
| 76 | Vern Berry Bickford | 7 | Son | — | Illinois |
| 77 | John Hammerand | 69 | Father-in-law | — | Iowa |
| 78 | Anthony Harner | 32 | Head | — | Illinois |
| 79 | Charles Marshall | 28 | Head | Green House | Missouri |
| 80 | Virginia Marshall | 27 | Wife | — | Missouri |
Pedigree Summary
Margaret
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)