JC
John Coyle — 1920 US Census Record
Model Tree available1920 United States Federal Census · Polk, Iowa
Our Model Tree links this John Coyle across the 1900, 1910 and 1920 US Censuses in Polk, Iowa (XGBoost, ~Confirmed), with identified parents B & Vernard — first a son (b.~1877), then head of a 2-person household.
Age 43
b. ~1877
Male
Son
Born: Iowa
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Polk, Iowa |
| Surname | Coyle |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Laborer |
| Industry | Street work |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1877 |
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.
2 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Coyle | Head | — | 63 | ~1857 |
| John Coyle | Son | — | 43 | ~1877 |
Census Appearances
1900
Polk, Iowa
Son, age 24
Polk, Iowa · implied b. ~1876 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Coyle |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| Birth Month | Sep |
| Birth Year | 1876 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Iowa |
| Occupation | Cigar Maker |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1910
Polk, Iowa
Son, age 33
Polk, Iowa · implied b. ~1877 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Coyle |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Street Work |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Polk, Iowa
Son, age 43
Polk, Iowa · implied b. ~1877 — 2 household members
| Surname | Coyle |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Street work |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 John Coyle across 3 US Census years (1900, 1910 and 1920) in Polk, Iowa, using XGBoost record linkage. Identified parents: father B Coyle (~0.92 confidence) and father Vernard Coyle (~0.92 confidence) and mother Mary Coyle (~0.92 confidence) and mother Mary Coyle (~0.92 confidence) and mother Mary Coyle (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
B Coyle
b. ~1850
Source father
● Household
· direct · ~0.92
Father
Vernard Coyle
b. ~1852
Source father
● Household
· direct · ~0.92
Mother
Mary Coyle
b. ~1857
Source mother
● Household
· direct · ~0.92
Mother
Mary Coyle
b. ~1857
Source mother
● Household
· direct · ~0.92
Mother
Mary Coyle
b. ~1854
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Coyle
Son · 1920 · age 43 · b. ~1877 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Polk, Iowa
Open full size
1920 US Federal Census — Polk, Iowa
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu509unit:0785)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mary Cook | 4 | daughter | — | Iowa |
| 52 | Martha Cook | 1 | daughter | — | Iowa |
| 53 | Mathew Day | 55 | Head | Laborer | Iowa |
| 54 | Katherine Day | 44 | Wife | — | Iowa |
| 55 | James Day | 25 | Son | Baker | Iowa |
| 56 | Mathew Jr Day | 17 | Son | Packer | Iowa |
| 57 | George Day | 15 | Son | — | Iowa |
| 58 | Mary Coyle | 63 | Head | — | Iowa |
| 59 | John Coyle THIS PERSON | 43 | Son | Laborer | Iowa |
| 60 | — | None | — | — | — |
| 61 | — | None | — | — | — |
| 62 | — | None | — | — | — |
| 63 | — | None | — | — | — |
| 64 | — | None | — | — | — |
| 65 | — | None | — | — | — |
| 66 | — | None | — | — | — |
| 67 | — | None | — | — | — |
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| 69 | — | None | — | — | — |
| 70 | — | None | — | — | — |
| 71 | — | None | — | — | — |
| 72 | — | None | — | — | — |
| 73 | — | None | — | — | — |
| 74 | — | None | — | — | — |
| 75 | — | None | — | — | — |
| 76 | — | None | — | — | — |
| 77 | — | None | — | — | — |
| 78 | — | None | — | — | — |
| 79 | — | None | — | — | — |
| 80 | — | None | — | — | — |
| 81 | — | None | — | — | — |
| 82 | — | None | — | — | — |
| 83 | — | None | — | — | — |
| 84 | — | None | — | — | — |
| 85 | — | None | — | — | — |
| 86 | — | None | — | — | — |
| 87 | — | None | — | — | — |
| 88 | — | None | — | — | — |
| 89 | — | None | — | — | — |
| 90 | — | None | — | — | — |
| 91 | — | None | — | — | — |
| 92 | — | None | — | — | — |
| 93 | — | None | — | — | — |
| 94 | — | None | — | — | — |
| 95 | — | None | — | — | — |
| 96 | — | None | — | — | — |
| 97 | — | None | — | — | — |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
Pedigree Summary
John
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 1920 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)