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Martha Thompson — 1920 US Census Record
Model Tree available1920 United States Federal Census · Woodbury, Iowa
Our Model Tree links this Martha Thompson across the 1900, 1910 and 1920 US Censuses in Woodbury, Iowa (XGBoost, ~Confirmed), with identified parents Jay & John — first a daughter (b.~1891), then head of a 4-person household.
Age 29
b. ~1891
Female
Daughter
Born: Iowa
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Woodbury, Iowa |
| Surname | Thompson |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Sioux City |
| Est. Birth Year | ~1891 |
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 1920 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Martha Thompson | Daughter | — | 29 | ~1891 |
| Anna Thompson | Daughter | — | 27 | ~1893 |
| John Thompson | Head | — | 53 | ~1867 |
| Mattie Thompson | Spouse | — | 52 | ~1868 |
Census Appearances
1900
Woodbury, Iowa
Daughter, age 11
Woodbury, Iowa · implied b. ~1889 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Birth Month | Nov |
| Birth Year | 1889 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Iowa |
| Occupation | At School |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1910
Woodbury, Iowa
Daughter, age 20
Woodbury, Iowa · implied b. ~1890 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Woodbury, Iowa
Daughter, age 29
Woodbury, Iowa · implied b. ~1891 — 4 household members
| Surname | Thompson |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Iowa |
| 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 Martha Thompson across 3 US Census years (1900, 1910 and 1920) in Woodbury, Iowa, using XGBoost record linkage. Identified parents: father Jay Thompson (~0.92 confidence) and father John Thompson (~0.92 confidence) and mother Halbors Thompson (~0.92 confidence) and mother Katie Thompson (~0.92 confidence) and father John Thompson (~0.92 confidence) and mother Mattie Thompson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jay Thompson
b. ~1860
Source father
● Household
· direct · ~0.92
Father
John Thompson
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Halbors Thompson
b. ~1862
Source mother
● Household
· direct · ~0.92
Mother
Katie Thompson
b. ~1863
Source mother
● Household
· direct · ~0.92
Father
John Thompson
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Mattie Thompson
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Martha Thompson
Daughter · 1920 · age 29 · b. ~1891 · Iowa
★ You are viewing this record
Sibling
Anna Thompson
Sibling · 1920 · age 27
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
1920 US Federal Census — Woodbury, Iowa
Open full size
1920 US Federal Census — Woodbury, Iowa
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu520unit:1157)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Stephecke Heinecke | 24 | Wife | — | Iowa |
| 52 | William Thomas | 27 | Head | Switchman | Wisconsin |
| 53 | Mildred Thomas | 25 | Wife | — | Nebraska |
| 54 | Bernard Thomas | 4 | Son | — | Iowa |
| 55 | George Thomas | 29 | Brother | Clerk | Iowa |
| 56 | George Holder | 29 | Head | Engineer | Kansas |
| 57 | Alice Holder | 26 | Wife | — | S. Dakota |
| 58 | Phyllis Holder | 0 | Daughter | — | Iowa |
| 59 | Earl Lombard | 22 | Head | Carpenter | Michigan |
| 60 | Esther Lombard | 20 | Wife | — | Iowa |
| 61 | George Monroe | 24 | Head | Engineer | Missouri |
| 62 | Madge Monroe | 27 | Wife | — | Minnesota |
| 63 | Goldie Monroe | 0 | Daughter | — | Missouri |
| 64 | George Monroe | 0 | Son | — | Missouri |
| 65 | Robert Miller | 38 | Head | Conductor | North Carolina |
| 66 | Lillian Miller | 32 | Wife | — | S. Dakota |
| 67 | Mary Miller | 14 | Daughter | — | S. Dakota |
| 68 | Mildred Miller | 12 | Daughter | — | Nebraska |
| 69 | Robert Miller | 6 | Son | — | S. Dakota |
| 70 | Dorothy Miller | 4 | Daughter | — | S. Dakota |
| 71 | Charles Chase | 21 | Brother-in-law | Laborer | S. Dakota |
| 72 | John Thompson | 53 | Head | — | Norway |
| 73 | Mattie Thompson | 52 | Wife | — | Iowa |
| 74 | Martha Thompson THIS PERSON | 29 | Daughter | — | Iowa |
| 75 | Anna Thompson | 27 | Daughter | — | Iowa |
| 76 | Henry Vroomenhoek | 33 | Head | Blacksmith | Holland |
| 77 | Cora Vroomenhoek | 33 | Wife | — | Holland |
| 78 | Elizabeth Vroomenhoek | 14 | Daughter | — | Holland |
| 79 | Marion Vroomenhoek | 12 | Daughter | — | Holland |
| 80 | Henry Vroomenhoek | 10 | Son | — | Iowa |
| 81 | Joseph Vroomenhoek | 9 | Son | — | Iowa |
| 82 | Nora Vroomenhoek | 7 | Daughter | — | Iowa |
| 83 | Martha Vroomenhoek | 5 | Daughter | — | Iowa |
| 84 | Martin Vroomenhoek | 3 | Son | — | Iowa |
| 85 | Nellie Vroomenhoek | 1 | Daughter | — | Iowa |
| 86 | Frank Deforce | 57 | Head | Laborer | Michigan |
| 87 | Luella Deforce | 53 | Wife | — | United States |
| 88 | Pearl Deforce | 28 | Daughter | Cooper | Iowa |
| 89 | Ray Deforce | 24 | Son | Laborer | Iowa |
| 90 | Alice Deforce | 19 | Daughter | Bookkeeper | Iowa |
| 91 | Lucetta Deforce | 13 | Daughter | — | Iowa |
| 92 | Helen Deforce | 10 | Daughter | — | Iowa |
| 93 | Robert Cromwell | 32 | Head | Machinist | Minnesota |
| 94 | Nellie Cromwell | 28 | Wife | — | Iowa |
| 95 | Helen Cromwell | 9 | Daughter | — | Iowa |
| 96 | Luella Cromwell | 7 | Daughter | — | Iowa |
| 97 | Wallace Cromwell | 3 | Son | — | Iowa |
| 98 | Hazel Matthews | 31 | Sister-in-law | Operator | Iowa |
| 99 | Charles Mitchell | 72 | Head | — | England |
| 100 | Eliza Mitchell | 64 | Wife | — | Wisconsin |
Pedigree Summary
Martha + 1 sibling
Gen 1 · 6 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)