MW
Mary Williams — 1920 US Census Record
Model Tree available1920 United States Federal Census · New Castle, Delaware
Our Model Tree links this Mary Williams across the 1900, 1910 and 1920 US Censuses in New Castle, Delaware (XGBoost, ~Confirmed), with identified parents Thomas & Rebecca — first a spouse (b.~1878), then head of a 5-person household.
Age 42
b. ~1878
Female
Spouse
Born: Delaware
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | New Castle, Delaware |
| Surname | Williams |
| Given Name | Mary T |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Farmer |
| Township / Ward | Election 11Th Dist |
| Est. Birth Year | ~1878 |
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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Alice Williams | Daughter | — | 14 | ~1906 |
| Howard Williams | Head | — | 47 | ~1873 |
| John Williams | Son | — | 15 | ~1905 |
| Ralph Williams | Son | — | 17 | ~1903 |
| Mary Williams | Spouse | — | 42 | ~1878 |
Census Appearances
1900
New Castle, …
Daughter, age 24
New Castle, Delaware · implied b. ~1876 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Mary Anna |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Delaware |
| Birth Month | Jun |
| Birth Year | 1876 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1910
New Castle, …
Spouse, age 32
New Castle, Delaware · implied b. ~1878 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Delaware |
| Years Married | 10 |
| Children Born | 3 |
| Children Living | 3 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1920
New Castle, …
Spouse, age 42
New Castle, Delaware · implied b. ~1878 — 5 household members
| Surname | Williams |
| Given Name | Mary T |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 Williams across 3 US Census years (1900, 1910 and 1920) in New Castle, Delaware, using XGBoost record linkage. Identified parents: father Thomas Williams (~0.92 confidence) and mother Rebecca Williams (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Williams
b. ~1856
Source father
● Household
· direct · ~0.92
Mother
Rebecca Williams
b. ~1859
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Williams
Spouse · 1920 · age 42 · b. ~1878 · Delaware
★ 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 — New Castle, Delaware
Open full size
1920 US Federal Census — New Castle, Delaware
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu204unit:0302)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas R Mcmullin | 60 | Head | — | Delaware |
| 2 | Barbara B Mcmullin | 54 | Wife | — | Maryland |
| 3 | Esther Mcmullin | 33 | Daughter | Garage | Delaware |
| 4 | Thomas R Mcmullin | 27 | Son | — | Delaware |
| 5 | Robert H Mcmullin | 24 | Son | Repairman | Delaware |
| 6 | Earl B Mcmullin | 20 | Son | Bookkeeper | Delaware |
| 7 | Myrtle Mcmullin | 19 | Daughter | Repairman | Delaware |
| 8 | John Mayer | 45 | Head | Bookkeeper | Delaware |
| 9 | Pauline C Mayer | 38 | Wife | — | Maryland |
| 10 | John F Mayer | 17 | Son | Farmer | Pennsylvania |
| 11 | Arthur P Mayer | 15 | Son | — | Maryland |
| 12 | Eugene J Mayer | 13 | Son | — | Maryland |
| 13 | Vincent L Mayer | 11 | Son | — | Maryland |
| 14 | Francis C Mayer | 8 | Son | — | Maryland |
| 15 | Eric G Mayer | 2 | Son | — | Delaware |
| 16 | George Mccaughy | 52 | Head | — | Delaware |
| 17 | Lizzie M Mccaughy | 43 | Wife | — | Delaware |
| 18 | Ida M Mccaughy | 17 | Daughter | Farmer | Delaware |
| 19 | Lucy R Mccaughy | 13 | Daughter | — | Delaware |
| 20 | Thomas Smith | 41 | Head | — | Delaware |
| 21 | Albert Smith | 18 | Son | Laborer | Delaware |
| 22 | Daisy Smith | 17 | Daughter | Laborer | Delaware |
| 23 | Elmira Smith | 15 | Daughter | — | Delaware |
| 24 | Ida M Smith | 12 | Daughter | — | Delaware |
| 25 | Mary Smith | 10 | Daughter | — | Delaware |
| 26 | Helen Smith | 9 | Daughter | — | Delaware |
| 27 | Frank A Godwin | 44 | Head | — | Delaware |
| 28 | Elizabeth Godwin | 34 | Wife | — | Pennsylvania |
| 29 | Elizabeth Bower | 78 | Head | Farmer | Maryland |
| 30 | Harrison Georgie Bower | 77 | Sister | — | Pennsylvania |
| 31 | Reynolds Charlotte Bower | 80 | Sister | — | Pennsylvania |
| 32 | Bowman Albert Bower | 65 | Servant | — | Washington D.C. |
| 33 | Howard P Williams | 47 | Head | Servant | Maryland |
| 34 | Mary T Williams THIS PERSON | 42 | Wife | Farmer | Delaware |
| 35 | John D Williams | 15 | Son | — | Pennsylvania |
| 36 | Ralph T Williams | 17 | Son | — | Maryland |
| 37 | Alice E Williams | 14 | Daughter | — | Maryland |
| 38 | Nathan James | 50 | Head | — | Maryland |
| 39 | Catherine James | 48 | Wife | Laborer | Pennsylvania |
| 40 | Nathan James | 19 | Son | Lashman | Virginia |
| 41 | William James | 15 | Son | Laborer | Delaware |
| 42 | John James | 13 | Son | — | Delaware |
| 43 | Ethel James | 9 | Daughter | — | Delaware |
| 44 | Gladys James | 6 | Daughter | — | Delaware |
| 45 | Samuel S Slack | 29 | Head | — | Delaware |
| 46 | Catherine D Slack | 23 | Wife | — | Delaware |
| 47 | Joseph H D Slack | 27 | Brother | Farmer | Maryland |
| 48 | Nathaniel Hughes | 57 | Head | — | Delaware |
| 49 | Rebecca J Hughes | 55 | Wife | Laborer | Maryland |
| 50 | William D Berry | 41 | Head | Laborer | Maryland |
Pedigree Summary
Mary
Gen 1 · 2 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)