MU
Mary Underwood — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Moody, South Dakota
Our Model Tree links this Mary Underwood across the 1900, 1910 and 1920 US Censuses in Moody, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1851), then head of a 2-person household.
Age 69
b. ~1851
Female
Head
Born: New Hampshire
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Moody, South Dakota |
| Surname | Underwood |
| Given Name | Mary J. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Vermont |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Township / Ward | Egan City |
| Est. Birth Year | ~1851 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Hazel Underwood | Daughter | — | 24 | ~1896 |
| Mary Underwood | Head | — | 69 | ~1851 |
Census Appearances
1900
Moody, South …
Spouse, age 49
Moody, South Dakota · implied b. ~1851 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Underwood |
| Given Name | Mary J |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Birth Month | Sept |
| Birth Year | 1851 |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Vermont |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1910
Moody, South …
Spouse, age 57
Moody, South Dakota · implied b. ~1853 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Underwood |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Years Married | 41 |
| Children Born | 8 |
| Children Living | 7 |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Vermont |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1920
Moody, South …
Head, age 69
Moody, South Dakota · implied b. ~1851 — 2 household members
| Surname | Underwood |
| Given Name | Mary J. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Vermont |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
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 Underwood across 3 US Census years (1900, 1910 and 1920) in Moody, South Dakota, using XGBoost record linkage.
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This person
Anchor record
Mary Underwood
Head · 1920 · age 69 · b. ~1851 · South Dakota
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Moody, South Dakota
Open full size
1920 US Federal Census — Moody, South Dakota
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1720unit:0422)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Sawyer | 51 | Head | Laborer | Iowa |
| 2 | Cora Sawyer | 51 | Wife | — | Wisconsin |
| 3 | Earl Sawyer | 17 | Son | Apprentice Plasterer | South Dakota |
| 4 | Thomas E. Jones | 27 | Head | Plasterer | Illinois |
| 5 | Eva Jones | 22 | Wife | — | South Dakota |
| 6 | Edith J. Jones | 3 | Daughter | — | South Dakota |
| 7 | Robert A. Jones | 2 | Son | — | South Dakota |
| 8 | Charles W. Jones | 0 | Son | — | South Dakota |
| 9 | Charles Duncan | 60 | Head | City Marshal | Wisconsin |
| 10 | Rose Duncan | 49 | Wife | — | Germany |
| 11 | Chauncey W. Duncan | 18 | Son | — | South Dakota |
| 12 | Ella May Duncan | 15 | Daughter | — | South Dakota |
| 13 | Lois Louise Duncan | 13 | Daughter | — | South Dakota |
| 14 | Agnes V. Duncan | 9 | Daughter | — | South Dakota |
| 15 | Otto J. Miller | 38 | Head | Implem. Dealer | Wisconsin |
| 16 | Edna F. Miller | 35 | Wife | — | Minnesota |
| 17 | Virgil W. Miller | 14 | Son | — | South Dakota |
| 18 | Kenneth G. Miller | 12 | Son | — | South Dakota |
| 19 | Verla B. Miller | 10 | Daughter | — | South Dakota |
| 20 | Lawrence H. Miller | 52 | Head | Harnessmaker | New York |
| 21 | Mary L. Miller | 37 | Wife | — | Michigan |
| 22 | Lucille F. Miller | 14 | Daughter | — | Iowa |
| 23 | Helen G. Miller | 12 | Daughter | — | South Dakota |
| 24 | George R. H. Lanning | 45 | Head | — | New Jersey |
| 25 | Mary Lanning | 75 | Wife | — | Germany |
| 26 | James Tibble | 59 | Head | Teacher | Wisconsin |
| 27 | Alice Tibble | 50 | Wife | — | Wisconsin |
| 28 | Clifford Earl Tibble | 15 | Son | — | South Dakota |
| 29 | Richard Asa Tibble | 12 | Son | — | South Dakota |
| 30 | Robert Tibble | 25 | Son | — | South Dakota |
| 31 | Paul G. Tibble | 21 | Son | — | South Dakota |
| 32 | Frank Flatner | 26 | Head | Store Keeper | South Dakota |
| 33 | Lucile Flatner | 23 | Wife | — | Iowa |
| 34 | Charles Buck | 64 | Head | — | Michigan |
| 35 | Anna E. Buck | 61 | Wife | — | Michigan |
| 36 | George Laird | 72 | Head | Mail Carrier | Michigan |
| 37 | Salome J. Laird | 67 | Wife | — | Michigan |
| 38 | Archie Morrison | 35 | Head | Laborer | Illinois |
| 39 | Myrtle Morrison | 26 | Wife | — | South Dakota |
| 40 | Mary J. Underwood THIS PERSON | 69 | Head | — | New Hampshire |
| 41 | Hazel Underwood | 24 | Daughter | — | South Dakota |
| 42 | Tracy Fullman | 29 | Head | Carpenter | Iowa |
| 43 | Eda Fullman | 29 | Wife | — | South Dakota |
| 44 | Ruby Fullman | 4 | Daughter | — | Minnesota |
| 45 | Ruth Fullman | 2 | Daughter | — | South Dakota |
| 46 | Peter W. Nicol | 40 | Head | Teamster | Scotland |
| 47 | Elizabeth Nicol | 38 | Wife | — | Scotland |
| 48 | Edith M. Nicol | 8 | Daughter | — | South Dakota |
| 49 | Nellie Nicol | 5 | Son | — | South Dakota |
| 50 | George Nicol | 3 | Son | — | South Dakota |
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)