ID
Isaac Davis — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Northumberland, Pennsylvania
Our Model Tree links this Isaac Davis across the 1900, 1910 and 1920 US Censuses in Northumberland, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1841), then head of a 3-person household.
Age 79
b. ~1841
Male
Head
Born: Pennsylvania
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Northumberland, Pennsylvania |
| Surname | Davis |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 79 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Additional Details | |
| Occupation | Merchant |
| Industry | Grocery |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Merchant |
| Township / Ward | Mt Carmel Borough |
| Est. Birth Year | ~1841 |
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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Isaac Davis | Head | — | 79 | ~1841 |
| Martha Davis | Spouse | — | 73 | ~1847 |
| Mary Davis | Daughter | — | 35 | ~1885 |
Census Appearances
1900
Northumberland, Pennsylvania
Head, age 59
Northumberland, Pennsylvania · implied b. ~1841 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Birth Month | May |
| Birth Year | 1841 |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Occupation | Stationary Engineer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1910
Northumberland, Pennsylvania
Head, age 70
Northumberland, Pennsylvania · implied b. ~1840 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Years Married | 44 |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Occupation | Owner |
| Industry | Candy Store |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Northumberland, Pennsylvania
Head, age 79
Northumberland, Pennsylvania · implied b. ~1841 — 3 household members
| Surname | Davis |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 79 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Occupation | Merchant |
| Industry | Grocery |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| 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 Isaac Davis across 3 US Census years (1900, 1910 and 1920) in Northumberland, Pennsylvania, using XGBoost record linkage.
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This person
Anchor record
Isaac Davis
Head · 1920 · age 79 · b. ~1841 · Pennsylvania
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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 — Northumberland, Pennsylvania
Open full size
1920 US Federal Census — Northumberland, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1612unit:0248)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mary | 13 | Daughter | — | Pennsylvania |
| 52 | Mildred | 12 | Daughter | — | Pennsylvania |
| 53 | Ralph | 5 | Son | — | Pennsylvania |
| 54 | Lawrence Sneddon | 6 | Grand-child | — | Pennsylvania |
| 55 | Straten Sneddon | 4 | Grand-child | — | Pennsylvania |
| 56 | Isaac Davis THIS PERSON | 79 | Head | Merchant | Pennsylvania |
| 57 | Martha Davis | 73 | Wife | — | Wales |
| 58 | Mary Davis | 35 | Daughter | — | Pennsylvania |
| 59 | Elias Thomas | 48 | Head | Operator | Pennsylvania |
| 60 | Helen Thomas | 21 | Daughter | — | Pennsylvania |
| 61 | Elizabeth Thomas | 11 | Daughter | — | Pennsylvania |
| 62 | Velma Thomas | 3 | Daughter | — | Pennsylvania |
| 63 | Hugh J. Kammerer | 28 | Head | Laborer | Pennsylvania |
| 64 | Matilda Kammerer | 25 | Wife | — | Pennsylvania |
| 65 | Mary Kammerer | 1 | Daughter | — | Pennsylvania |
| 66 | Bertha Zamborsky | 18 | Boarder | Weaver | Pennsylvania |
| 67 | John Zamborsky | 33 | Head | Laborer | Pennsylvania |
| 68 | Anna Zamborsky | 39 | Wife | — | Pennsylvania |
| 69 | Beulah Harvey | 14 | Step-daughter | — | Pennsylvania |
| 70 | Mary Spirley | 27 | Sister | — | Pennsylvania |
| 71 | William H. Blanch | 61 | Head | Janitor | Pennsylvania |
| 72 | Harry W. Blanch | 50 | Brother | Engineer | England |
| 73 | Mary Brogun | 58 | Head | — | Ireland |
| 74 | Mary Brogun | 29 | Daughter | Saleslady | Pennsylvania |
| 75 | Anastasia Brogun | 24 | Daughter | Looper | Pennsylvania |
| 76 | Francis Brogun | 22 | Son | Looper | Pennsylvania |
| 77 | Catherine Brogun | 15 | Daughter | — | Pennsylvania |
| 78 | Mart Purcell | 35 | Head | Miner | Pennsylvania |
| 79 | Mary Purcell | 25 | Wife | — | Pennsylvania |
| 80 | Lena Purcell | 5 | Daughter | — | Pennsylvania |
| 81 | Mary Purcell | 7 | Daughter | — | Pennsylvania |
| 82 | Mary Jane Purcell | 35 | Sister | — | Pennsylvania |
| 83 | Mary Barr | 49 | Mother-in-law | Housecleaner | England |
| 84 | Edward Mc Donald | 37 | Head | Miner | Pennsylvania |
| 85 | Jennie Mc Donald | 37 | Wife | — | Pennsylvania |
| 86 | Thomas Mc Donald | 10 | Son | — | Pennsylvania |
| 87 | Edward Mc Donald | 8 | Son | — | Pennsylvania |
| 88 | Vincent Mc Donald | 4 | Son | — | Pennsylvania |
| 89 | Rita Mc Donald | 2 | Daughter | — | Pennsylvania |
| 90 | Jean Mc Donald | 1 | Daughter | — | Pennsylvania |
| 91 | James Freehan | 70 | Head | Repairman | Ireland |
| 92 | Rose Freehan | 66 | Wife | — | Pennsylvania |
| 93 | Ella Freehan | 28 | Daughter | Milliner | Pennsylvania |
| 94 | Francis Freehan | 25 | Son | Laborer | Pennsylvania |
| 95 | James Bonshea | 13 | Grand-son | — | Pennsylvania |
| 96 | Alex Marchinsky | 28 | Head | Manager | Pennsylvania |
| 97 | Ella Marchinsky | 26 | Wife | — | Pennsylvania |
| 98 | Dorothy Marchinsky | 6 | Daughter | — | Pennsylvania |
| 99 | Edward Marchinsky | 4 | Son | — | Pennsylvania |
| 100 | Ramona Marchinsky | 2 | Daughter | — | Pennsylvania |
Related Census Records
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)