MU
Mary Underwood — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Washington, Pennsylvania
Our Model Tree links this Mary Underwood across the 1920 and 1930 US Censuses in Washington, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 8-person household.
Age 15
b. ~1915
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Washington, Pennsylvania |
| Surname | Underwood |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | California Borough |
| 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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Howard Underwood | Son | — | 18 | ~1912 |
| Ernest Underwood | Son | — | 13 | ~1917 |
| James Underwood | Head | — | 47 | ~1883 |
| Mary Underwood | Daughter | — | 15 | ~1915 |
| Vida Underwood | Daughter | — | 5 | ~1925 |
| James Underwood | Son | — | 6 | ~1924 |
| Margaret Underwood | Daughter | — | 16 | ~1914 |
| Sherman Underwood | Son | — | 10 | ~1920 |
Census Appearances
1920
Washington, Pennsylvania
Daughter, age 4
Washington, Pennsylvania · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Underwood |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Washington, Pennsylvania
Daughter, age 15
Washington, Pennsylvania · implied b. ~1915 — 8 household members
| Surname | Underwood |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 2 US Census years (1920 and 1930) in Washington, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Underwood
Daughter · 1930 · age 15 · b. ~1915 · Pennsylvania
★ You are viewing this record
Sibling
Ernest Underwood
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vida Underwood
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Underwood
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Underwood
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Underwood
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sherman Underwood
Sibling · 1930 · age 10
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
1930 US Federal Census — Washington, Pennsylvania
Open full size
1930 US Federal Census — Washington, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2160:0839)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clarissa M. Hifelt | 36 | Head | — | Pennsylvania |
| 2 | Mary Jean Hifelt | 1 | Daughter | — | Pennsylvania |
| 3 | Richard Hawthorne | 38 | Head | — | Pennsylvania |
| 4 | Viola Hawthorne | 27 | Wife | — | Pennsylvania |
| 5 | Artie Hawthorne | 3 | Son | Bookkeeper | Pennsylvania |
| 6 | Isaac J. Buttermore | 66 | Head | — | Pennsylvania |
| 7 | Mary Buttermore | 55 | Wife | — | Pennsylvania |
| 8 | James S. Buttermore | 34 | Son | Miner | Pennsylvania |
| 9 | Mable Buttermore | 32 | Daughter | — | Pennsylvania |
| 10 | Sara Buttermore | 30 | Daughter | Laborer | Pennsylvania |
| 11 | Mary Buttermore | 25 | Daughter | Teacher | Pennsylvania |
| 12 | Leuba Buttermore | 20 | Daughter | Teacher | Pennsylvania |
| 13 | Alex Bauer | 30 | Head | Teacher | Pennsylvania |
| 14 | Margaret Bauer | 28 | Wife | — | Pennsylvania |
| 15 | Alex Jr. Bauer | 4 | Son | Fireman | Pennsylvania |
| 16 | Mary Richmond | 75 | Head | — | Pennsylvania |
| 17 | Charles Heilman | 49 | Head | — | Kansas |
| 18 | Gertrude Heilman | 47 | Wife | Collector | Maryland |
| 19 | Grain Heilman | 20 | Son | — | Maryland |
| 20 | Eugene Heilman | 18 | Son | Teacher | Maryland |
| 21 | Lois Heilman | 16 | Daughter | Teacher | Maryland |
| 22 | Elizabeth Heilman | 13 | Daughter | — | Maryland |
| 23 | Byron Heilman | 11 | Son | — | Maryland |
| 24 | Marguerite Howland | 70 | Head | — | Pennsylvania |
| 25 | Egret Lavellen | 29 | Head | — | Pennsylvania |
| 26 | Hazel Lavellen | 22 | Wife | Bookkeeper | Pennsylvania |
| 27 | Alfred Parke | 22 | Head | — | Pennsylvania |
| 28 | Thelma Parke | 22 | Wife | Folding Room | Pennsylvania |
| 29 | George C. Harding | 62 | Head | — | Nebraska |
| 30 | Robert Harding | 31 | Son | Doctor | Nebraska |
| 31 | Harriet Harding | 16 | Daughter | — | Nebraska |
| 32 | Monroe J. West | 57 | Head | — | Pennsylvania |
| 33 | Mary H. West | 50 | Wife | Bookkeeper | Pennsylvania |
| 34 | James M. Underwood | 47 | Head | — | Pennsylvania |
| 35 | Howard Underwood | 18 | Son | — | Pennsylvania |
| 36 | Margaret Underwood | 16 | Daughter | Miner | Pennsylvania |
| 37 | Mary Underwood THIS PERSON | 15 | Daughter | — | Pennsylvania |
| 38 | Ernest Underwood | 13 | Son | — | Pennsylvania |
| 39 | Sherman Underwood | 10 | Son | — | Pennsylvania |
| 40 | Vida Underwood | 5 | Daughter | — | Pennsylvania |
| 41 | James Underwood | 6 | Son | — | Pennsylvania |
| 42 | William Conrod | 51 | Head | Salesman | Pennsylvania |
| 43 | Bessie Myers | 21 | Niece | — | Pennsylvania |
| 44 | Robert Conrod | 47 | Son | Salesman | Pennsylvania |
| 45 | Sarah Conrod | 36 | Daughter | Teacher | Pennsylvania |
| 46 | Samuel Neagley | 45 | Head | Teacher | Pennsylvania |
| 47 | Ellen Neagley | 42 | Wife | — | Pennsylvania |
| 48 | Marion Neagley | 12 | Daughter | — | Pennsylvania |
| 49 | Robert Neagley | 7 | Son | — | Pennsylvania |
| 50 | William Neagley | 5 | Son | — | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)