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John Mcmullen — 1920 US Census Record
Linked across censuses1920 United States Federal Census · New Castle, Delaware
Our Model Tree links this John Mcmullen across the 1900, 1910 and 1920 US Censuses in New Castle, Delaware (XGBoost, ~Confirmed) — first a head (b.~1844), then head of a 8-person household.
Age 76
b. ~1844
Male
Head
Born: Delaware
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | New Castle, Delaware |
| Surname | McMullen |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 76 |
| Marital Status | Married |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Additional Details | |
| Occupation | Guard |
| Industry | Ship Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Guard |
| Township / Ward | Wilmington City |
| Est. Birth Year | ~1844 |
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 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Ray Evans | Other | — | 22 | ~1898 |
| Mary Mcmullen | Daughter | — | 24 | ~1896 |
| Rita Mcmullen | Daughter | — | 20 | ~1900 |
| John Mcmullen | Head | — | 76 | ~1844 |
| Laura Mcmullen | Daughter | — | 49 | ~1871 |
| Ida Mcmullen | Other | — | 9 | ~1911 |
| John Hamill | Other | — | 30 | ~1890 |
| Hattie Mcmullen | Daughter | — | 45 | ~1875 |
Census Appearances
1900
New Castle, …
Head, age 57
New Castle, Delaware · implied b. ~1843 — 19 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMullen |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Delaware |
| Birth Month | Jan |
| Birth Year | 1843 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | Watchman |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1910
New Castle, …
Head, age 66
New Castle, Delaware · implied b. ~1844 — 14 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMullin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Delaware |
| Years Married | 46 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | Watchman |
| Industry | Ship yard |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1920
New Castle, …
Head, age 76
New Castle, Delaware · implied b. ~1844 — 8 household members
| Surname | McMullen |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 76 |
| Marital Status | Married |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | Guard |
| Industry | Ship Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| 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 John Mcmullen across 3 US Census years (1900, 1910 and 1920) in New Castle, Delaware, using XGBoost record linkage.
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This person
Anchor record
John Mcmullen
Head · 1920 · age 76 · b. ~1844 · Delaware
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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 — New Castle, Delaware
Open full size
1920 US Federal Census — New Castle, Delaware
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu203unit:0084)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Herbert C Denning | 33 | Head | Foreman | Delaware |
| 2 | Nola A Denning | 32 | Wife | — | Delaware |
| 3 | Dorothy E Denning | 8 | Daughter | — | Delaware |
| 4 | Elizabeth Denning | 7 | Daughter | — | Maryland |
| 5 | Isaac Lewis Denning | 69 | Agent | Foreman | Pennsylvania |
| 6 | Reba B Smith | 38 | Head | Teacher | Delaware |
| 7 | Sue S Smith | 35 | Sister | — | Delaware |
| 8 | Florence J Smith | 52 | Sister | Stenographer | Delaware |
| 9 | Mabel T Smith | 49 | Sister | — | Delaware |
| 10 | Nathan Hackman | 59 | Head | Salesman | Maryland |
| 11 | Mary C Hackman | 44 | Wife | — | Maryland |
| 12 | Mary Buckingham | 19 | Lodger | Clerk | Delaware |
| 13 | Charles B Dubell | 75 | Head | Carpenter | New Jersey |
| 14 | Ida G Dubell | 58 | Wife | — | New Jersey |
| 15 | Ida M Dubell | 36 | Wife | — | New Jersey |
| 16 | Taggerman Frances | 18 | Servant | Servant | Delaware |
| 17 | John H Ayers | 46 | Head | Machinist | Pennsylvania |
| 18 | Laura B Ayers | 44 | Wife | — | England |
| 19 | Margaret S Ayers | 13 | Daughter | — | Pennsylvania |
| 20 | Lawrence S Ayers | 10 | Son | — | Pennsylvania |
| 21 | Maud E Ayers | 20 | Servant | Servant | Nova Scotia |
| 22 | Emmett Ketch | 37 | Head | Chemist | Maryland |
| 23 | Helen Ketch | 37 | Wife | — | New York |
| 24 | Frances Ketch | 7 | Daughter | — | New York |
| 25 | Helen Ketch | 5 | Daughter | — | New York |
| 26 | Eleanor Ketch | 2 | Daughter | — | New York |
| 27 | Louisa Gailer | 69 | Servant | — | New York |
| 28 | Severson Cooling | 64 | Head | Manufacturer | Kentucky |
| 29 | Agnes Cooling | 53 | Wife | — | Delaware |
| 30 | Severson B Jr Cooling | 21 | Son | Assistant | Delaware |
| 31 | Catheryn Clark | 66 | Servant | Servant | Delaware |
| 32 | John Mcmullen THIS PERSON | 76 | Head | Guard | Delaware |
| 33 | Laura Mcmullen | 49 | Daughter | Keeper | Delaware |
| 34 | Hattie Mcmullen | 45 | Daughter | — | Delaware |
| 35 | Mary L Mcmullen | 24 | Daughter | — | Delaware |
| 36 | Rita Mcmullen | 20 | Daughter | Milliner | Delaware |
| 37 | Ida Mcmullen | 9 | Mother | — | Pennsylvania |
| 38 | John Hamill | 30 | Boarder | Machinist | Delaware |
| 39 | Ray Evans | 22 | Boarder | Clerk | Maryland |
| 40 | George W Smith | 53 | Head | Official | Maryland |
| 41 | Eleanor Smith | 40 | Wife | — | Germany |
| 42 | George W Smith | 13 | Son | — | Maryland |
| 43 | Gordon R Smith | 11 | Son | — | Maryland |
| 44 | Marvin Smith | 10 | Son | — | Maryland |
| 45 | Eleanor L Smith | 9 | Daughter | — | Maryland |
| 46 | Virginia R Smith | 6 | Daughter | — | Maryland |
| 47 | John H Smith | 4 | Son | — | Delaware |
| 48 | Paula Elizabeth Smith | 1 | Daughter | — | Delaware |
| 49 | Robert P Jump | 25 | Lodger | Clerk | Maryland |
| 50 | Alexander Beaton | 28 | Lodger | Clerk | Pennsylvania |
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)