MC
Mary Cavanaugh — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Williams, North Dakota
Our Model Tree links this Mary Cavanaugh across the 1920 and 1930 US Censuses in Williams, North Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 11-person household.
Age 5
b. ~1915
Female
Daughter
Born: North Dakota
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Williams, North Dakota |
| Surname | Cavanaugh |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Additional Details | |
| Can Read | No |
| Can Write | No |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | Lindahl Township |
| Est. Birth Year | ~1915 |
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.
11 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bernadette Cavanaugh | Daughter | — | 8 | ~1912 |
| Mary Cavanaugh | Daughter | — | 5 | ~1915 |
| Edward Cavanaugh | Son | — | 7 | ~1913 |
| Margaret Cavanaugh | Spouse | — | 26 | ~1894 |
| Catherine Cavanaugh | Daughter | — | ~1920 | |
| Dan Cavanaugh | Head | — | 32 | ~1888 |
| Margaret Cavanaugh | Daughter | — | 13 | ~1907 |
| Evelyn Cavanaugh | Daughter | — | 10 | ~1910 |
| Flora Cavanaugh | Daughter | — | 2 | ~1918 |
| Ruth Cavanaugh | Daughter | — | 3 | ~1917 |
| Gladys Cavanaugh | Daughter | — | 12 | ~1908 |
Census Appearances
1920
Williams, North …
Daughter, age 5
Williams, North Dakota · implied b. ~1915 — 11 household members
| Surname | Cavanaugh |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Can Read | No |
| Can Write | No |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Williams, North …
Daughter, age 15
Williams, North Dakota · implied b. ~1915 — 18 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kavanaugh |
| Given Name | Mary Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Mary Cavanaugh across 2 US Census years (1920 and 1930) in Williams, North Dakota, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cavanaugh
Daughter · 1920 · age 5 · b. ~1915 · North Dakota
★ You are viewing this record
Sibling
Ruth Cavanaugh
Sibling · 1920 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gladys Cavanaugh
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Cavanaugh
Sibling · 1920 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Cavanaugh
Sibling · 1920 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Cavanaugh
Sibling · 1920 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Flora Cavanaugh
Sibling · 1920 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Cavanaugh
Sibling · 1920 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernadette Cavanaugh
Sibling · 1920 · age 8
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 — Williams, North Dakota
Open full size
1920 US Federal Census — Williams, North Dakota
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1342unit:0761)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Obert Grasner | 27 | Head | — | Minnesota |
| 2 | Dan Cavanaugh | 32 | Head | Farmer | Minnesota |
| 3 | Margaret Cavanaugh | 26 | Wife | — | Minnesota |
| 4 | Margaret Cavanaugh | 13 | Daughter | — | North Dakota |
| 5 | Gladys Cavanaugh | 12 | Daughter | — | North Dakota |
| 6 | Evelyn Cavanaugh | 10 | Daughter | — | North Dakota |
| 7 | Bernadette Cavanaugh | 8 | Daughter | — | North Dakota |
| 8 | Edward Cavanaugh | 7 | Son | — | North Dakota |
| 9 | Mary Cavanaugh THIS PERSON | 5 | Daughter | — | North Dakota |
| 10 | Ruth Cavanaugh | 3 | Daughter | — | North Dakota |
| 11 | Flora Cavanaugh | 2 | Daughter | — | North Dakota |
| 12 | Catherine Cavanaugh | 0 | Daughter | — | North Dakota |
| 13 | Thorval Dalene | 42 | Head | Farmer | Norway |
| 14 | Inna Dalene | 32 | Wife | — | Norway |
| 15 | Torsten Dalene | 3 | Son | — | North Dakota |
| 16 | Martin Skoglund | 51 | Head | Farm Laborer | Norway |
| 17 | Mary Skoglund | 60 | Sister | Farmer | Norway |
| 18 | C. R. Erikson | 45 | Head | Farmer | Sweden |
| 19 | Innie Erikson | 41 | Wife | — | Sweden |
| 20 | Alice Erikson | 15 | Daughter | — | North Dakota |
| 21 | Annie Erikson | 13 | Daughter | — | North Dakota |
| 22 | Albin Erikson | 12 | Son | — | North Dakota |
| 23 | Henry Erikson | 7 | Son | — | North Dakota |
| 24 | George Erikson | 4 | Son | — | North Dakota |
| 25 | Andrew Grass | 71 | Head | Farm Laborer | Sweden |
| 26 | Ellen Grass | 59 | Wife | Farmer | Norway |
| 27 | Orville Grass | 25 | Son | — | North Dakota |
| 28 | Vernon H. Hoffman | 23 | Son | Farmer | Illinois |
| 29 | Vernon Rogers | 20 | Son | Farm Laborer | North Dakota |
| 30 | Knute Stromberg | 34 | Head | Farm Laborer | Norway |
| 31 | Anna Stromberg | 25 | Wife | Farmer | Norway |
| 32 | Ole Stromberg | 30 | Son | — | Norway |
| 33 | Ray Johnson | 24 | Head | Farm Laborer | Iowa |
| 34 | Rose Johnson | 22 | Wife | Farmer | Wisconsin |
| 35 | Alice Johnson | 2 | Daughter | — | North Dakota |
| 36 | James Johnson | 16 | Brother | — | Iowa |
| 37 | C. J. Lea | 65 | Head | Farmer | Norway |
| 38 | Inga M. Lea | 47 | Wife | — | Norway |
| 39 | Selma Lea | 16 | Daughter | — | North Dakota |
| 40 | Mary Lea | 14 | Daughter | — | North Dakota |
| 41 | Lillian Lea | 8 | Daughter | — | North Dakota |
| 42 | Evelyn Lea | 6 | Daughter | — | North Dakota |
| 43 | Severin C. Anderson | 49 | Head | Farmer | Norway |
| 44 | Anna Anderson | 39 | Wife | — | Sweden |
| 45 | Arnold Anderson | 14 | Son | — | North Dakota |
| 46 | Ethel S. Anderson | 12 | Daughter | — | North Dakota |
| 47 | Melvin O. Anderson | 7 | Son | — | North Dakota |
| 48 | Myrtle B. Anderson | 5 | Daughter | — | North Dakota |
| 49 | Peter Skaveland | 58 | Head | Farmer | Norway |
| 50 | Rebecca Skaveland | 31 | Wife | — | Norway |
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)