MJ
Mary Jones — 1930 US Census Record
Linked across censuses1930 United States Federal Census · New Castle, Delaware
Our Model Tree links this Mary Jones across the 1910, 1920, 1930 and 1940 US Censuses in New Castle, Delaware (XGBoost, ~Confirmed) — first a spouse (b.~1870), then head of a 4-person household.
Age 60
b. ~1870
Female
Spouse
Born: Delaware
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | New Castle, Delaware |
| Surname | Jones |
| Given Name | Mary W |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Delaware |
| Age at First Marriage | 23 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | Wilmington City |
| Est. Birth Year | ~1870 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Daisy Jones | Daughter | — | 20 | ~1910 |
| John Jones | Head | — | 65 | ~1865 |
| Joseph Taylor | Other | — | 9 | ~1921 |
| Mary Jones | Spouse | — | 60 | ~1870 |
Census Appearances
1910
New Castle, …
Spouse, age 38
New Castle, Delaware · implied b. ~1872 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Mary V. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Delaware |
| Years Married | 9 |
| Children Born | 0 |
| Children Living | 0 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1920
New Castle, …
Spouse, age 49
New Castle, Delaware · implied b. ~1871 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | Manager |
| Industry | Meat Mkt |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Spouse, age 60
New Castle, Delaware · implied b. ~1870 — 4 household members
| Surname | Jones |
| Given Name | Mary W |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Delaware |
| Age at First Marriage | 23 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
New-Castle-County, Delaware
Head, age 69
New-Castle-County, Delaware · implied b. ~1871 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Margaret D. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | New Castle City |
| 1935 Residence (County) | New Castle |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Jones across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Jones
Spouse · 1930 · age 60 · b. ~1870 · Delaware
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — New Castle, Delaware
Open full size
1930 US Federal Census — New Castle, Delaware
Page Contents
50 people indexed on this census page (ia:1930:15thcensus286unit:0705)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John R Kennedy | 44 | Head | Laborer | Virginia |
| 2 | Bertha M Kennedy | 44 | Wife | — | Virginia |
| 3 | Howard W Kennedy | 17 | Son | Laborer | Virginia |
| 4 | Clarence W Kennedy | 13 | Son | — | Virginia |
| 5 | John H Kennedy | 10 | Son | — | Virginia |
| 6 | John A Lenhoff | 47 | Head | Draftsman | Maryland |
| 7 | Barbara Ann Lenhoff | 43 | Wife | — | Maryland |
| 8 | Vincent Lenhoff | 23 | Son | Taking Clerk | Delaware |
| 9 | Mary G Lenhoff | 21 | Daughter | Saleslady | Delaware |
| 10 | Regina Lenhoff | 20 | Daughter | Cap Maker | Delaware |
| 11 | John F Lenhoff | 18 | Son | Farmer | Delaware |
| 12 | Raymond J Lenhoff | 16 | Son | — | Delaware |
| 13 | Daniel E Lenhoff | 15 | Son | — | Delaware |
| 14 | Doris E Lenhoff | 11 | Daughter | — | Delaware |
| 15 | Clement J Lenhoff | 8 | Son | — | Delaware |
| 16 | James Lenhoff | 5 | Son | — | Delaware |
| 17 | John Grundy | 34 | Head | Butcher | Pennsylvania |
| 18 | Adrienne Grundy | 33 | Wife | — | Pennsylvania |
| 19 | John Grundy | 9 | Son | — | Pennsylvania |
| 20 | Alice M Grundy | 8 | Daughter | — | Pennsylvania |
| 21 | Eleanor G Grundy | 5 | Daughter | — | Delaware |
| 22 | Robert J Grundy | 2 | Son | — | Delaware |
| 23 | Richard G Grundy | 1 | Son | — | Delaware |
| 24 | William L Lynch | 28 | Head | Chauffeur | Maryland |
| 25 | Ethel E Lynch | 28 | Wife | — | Delaware |
| 26 | William L Lynch | 6 | Son | — | Delaware |
| 27 | Florence M Lynch | 3 | Daughter | — | Delaware |
| 28 | John T Lynch | 50 | Head | Tube Maker | Delaware |
| 29 | Margaret Lynch | 47 | Wife | — | Delaware |
| 30 | Dorothy M Lynch | 8 | Daughter | — | Delaware |
| 31 | Mary Lynch | 26 | Daughter | Saleslady | Maryland |
| 32 | Patrick A Lynch | 29 | Son-in-law | Truckman | Maryland |
| 33 | Robert Lynch | 21 | Son | Contractor | Delaware |
| 34 | Helen V Lynch | 22 | Daughter-in-law | — | Pennsylvania |
| 35 | Maylon Mcmullen | 28 | Head | Butcher | Delaware |
| 36 | Edna Mcmullen | 26 | Wife | — | Delaware |
| 37 | Maylon Mcmullen | 2 | Son | — | Pennsylvania |
| 38 | John E Jones | 65 | Head | Laborer | Pennsylvania |
| 39 | Mary W Jones THIS PERSON | 60 | Wife | — | Delaware |
| 40 | Daisy E Jones | 20 | Daughter | — | Maryland |
| 41 | Joseph Taylor | 9 | Boarder | — | Delaware |
| 42 | William J Herbert | 77 | Head | Farmer | Pennsylvania |
| 43 | Lillian Herbert | 48 | Daughter | — | Pennsylvania |
| 44 | James E Hudson | 34 | Head | Carpenter | Delaware |
| 45 | Mary E Hudson | 34 | Wife | — | Pennsylvania |
| 46 | James E Hudson | 12 | Son | — | Delaware |
| 47 | Mary E Hudson | 12 | Daughter | — | Delaware |
| 48 | — | None | — | — | — |
| 49 | — | None | — | — | — |
| 50 | — | None | — | — | — |
Related Census Records
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)