RL
Robert Lyons — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dubuque-County, Iowa
Our Model Tree links this Robert Lyons across the 1930 and 1940 US Censuses in Dubuque-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 13-person household.
Age 14
b. ~1926
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dubuque-County, Iowa |
| Surname | Lyons |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Dubuque |
| 1935 Residence (County) | Dubuque |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Dubuque |
| Est. Birth Year | ~1926 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Jack Lyons | Son | — | 12 | ~1928 |
| Danial Lyons | Son | — | 21 | ~1919 |
| James Lyons | Son | — | 11 | ~1929 |
| Kay Lyons | Daughter | — | 4 | ~1936 |
| Helen Lyons | Daughter | — | 18 | ~1922 |
| Frank Zengle | Other | — | 45 | ~1895 |
| Virginia Lyons | Daughter | — | 16 | ~1924 |
| Vincent Dunn | Other | — | 65 | ~1875 |
| Darlene Lyons | Daughter | — | 9 | ~1931 |
| Robert Lyons | Son | — | 14 | ~1926 |
| William Jacobs | Other | — | 51 | ~1889 |
| Mary Lyons | Daughter | — | 19 | ~1921 |
| Lee Lyons | Head | — | 48 | ~1892 |
Census Appearances
1930
Dubuque, Iowa
Son, age 4
Dubuque, Iowa · implied b. ~1926 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyons |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Dubuque-County, Iowa
Son, age 14
Dubuque-County, Iowa · implied b. ~1926 — 13 household members
| Surname | Lyons |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Dubuque |
| 1935 Residence (County) | Dubuque |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Robert Lyons across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Lyons
Son · 1940 · age 14 · b. ~1926 · Iowa
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Sibling
Mary Lyons
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Darlene Lyons
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Danial Lyons
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Lyons
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Lyons
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Lyons
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kay Lyons
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Lyons
Sibling · 1940 · age 16
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 — Dubuque-County, Iowa
Open full size
1940 US Federal Census — Dubuque-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01158-00693)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leo J. Powell | 45 | Head | Machine Hand | Wisconsin |
| 2 | Isabelle Powell | 42 | Wife | — | Iowa |
| 3 | Catherine Powell | 9 | Daughter | — | Iowa |
| 4 | Herman Batteram | 59 | Head | Machine Hand | Germany |
| 5 | Hattie Batteram | 52 | Wife | — | Iowa |
| 6 | Adel Batteram | 14 | Daughter | — | Iowa |
| 7 | Robert Mackler | 22 | Head | Bleach | Iowa |
| 8 | Ilene Mackler | 19 | Wife | — | Minnesota |
| 9 | Arnold Leytem | 26 | Head | Machine Hand | Iowa |
| 10 | Elmita Leytem | 24 | Wife | — | Iowa |
| 11 | Betty Kay Leytem | 4 | Daughter | — | Iowa |
| 12 | Mary Lou Leytem | 3 | Daughter | — | Iowa |
| 13 | Norma Jean Leytem | 1 | Daughter | — | Iowa |
| 14 | Arnold Leytem | 0 | Son | — | Iowa |
| 15 | Clarence Widman | 34 | Head | Laborer | Iowa |
| 16 | Agnes Widman | 34 | Wife | Seamstress | Iowa |
| 17 | Josephine Widman | 69 | Mother | — | Germany |
| 18 | George Reich | 27 | Head | Machine Hand | Iowa |
| 19 | Alice Reich | 24 | Wife | — | Iowa |
| 20 | Constance Reich | 3 | Daughter | — | Iowa |
| 21 | Frank Halloway | 29 | Head | Rate Setter | Iowa |
| 22 | Lillian Halloway | 28 | Wife | — | Iowa |
| 23 | Phillis Halloway | 5 | Daughter | — | Iowa |
| 24 | Joyce Halloway | 2 | Daughter | — | Iowa |
| 25 | Gordon Halloway | 23 | Head | Truck Driver | Iowa |
| 26 | Mary Halloway | 18 | Wife | — | Iowa |
| 27 | Larry Halloway | 1 | Son | — | Iowa |
| 28 | Lee Lyons | 48 | Head | Chef | Iowa |
| 29 | Danial Lyons | 21 | Son | Waitress | Iowa |
| 30 | Mary Jane Lyons | 19 | Daughter | — | Iowa |
| 31 | Helen Lyons | 18 | Daughter | — | Iowa |
| 32 | Virginia Lyons | 16 | Daughter | — | Iowa |
| 33 | Robert Lyons THIS PERSON | 14 | Son | — | Iowa |
| 34 | Jack Lyons | 12 | Son | — | Iowa |
| 35 | James Lyons | 11 | Son | — | Iowa |
| 36 | Darlene Lyons | 9 | Daughter | — | Iowa |
| 37 | Kay Lyons | 4 | Daughter | — | Iowa |
| 38 | Vincent Dunn | 65 | Lodger | Carpenter | Iowa |
| 39 | Frank Zengle | 45 | Lodger | Machine Hand | Iowa |
| 40 | William Jacobs | 51 | Lodger | Machine Hand | Iowa |
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)