WC
William Cassidy — 1910 US Census Record
Linked across censuses1910 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this William Cassidy across the 1910 and 1920 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1909), then head of a 7-person household.
Age 1
b. ~1909
Male
Son
Born: Pennsylvania
Single
1910 Census Record Details
| Census Year | 1910 |
| Location | Philadelphia, Pennsylvania |
| Surname | Cassidy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1909 |
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.
7 people recorded at the same address in the 1910 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Cassidy | Son | — | 1 | ~1909 |
| John Cassidy | Head | — | 44 | ~1866 |
| James Cassidy | Son | — | 6 | ~1904 |
| Helen Cassidy | Daughter | — | 10 | ~1900 |
| Alice Cassidy | Spouse | — | 31 | ~1879 |
| Alice Cassidy | Daughter | — | 4 | ~1906 |
| John Cassidy | Son | — | 13 | ~1897 |
Census Appearances
1910
Philadelphia, Pennsylvania
Son, age 1
Philadelphia, Pennsylvania · implied b. ~1909 — 7 household members
| Surname | Cassidy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Son, age 10
Philadelphia, Pennsylvania · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassiday |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | 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 William Cassidy across 2 US Census years (1910 and 1920) in Philadelphia, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
William Cassidy
Son · 1910 · age 1 · b. ~1909 · Pennsylvania
★ You are viewing this record
Sibling
John Cassidy
Sibling · 1910 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Cassidy
Sibling · 1910 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Cassidy
Sibling · 1910 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Cassidy
Sibling · 1910 · age 6
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
1910 US Federal Census — Philadelphia, Pennsylvania
Open full size
1910 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1910:13thcensus1910po1406unit:1103)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John A Longer | 40 | Head | Sheet Iron Worker | Pennsylvania |
| 52 | Sarah Longer | 35 | Wife | — | Pennsylvania |
| 53 | Mary Longer | 16 | Daughter | — | Pennsylvania |
| 54 | John Longer | 13 | Son | — | Pennsylvania |
| 55 | Joseph Longer | 9 | Son | — | Pennsylvania |
| 56 | Catherine Longer | 6 | Daughter | — | Pennsylvania |
| 57 | Alice Longer | 3 | Daughter | — | Pennsylvania |
| 58 | Frances Longer | 1 | Daughter | — | Pennsylvania |
| 59 | Hunter Robinson | 47 | Head | Laborer | Pennsylvania |
| 60 | Mary Robinson | 46 | Wife | — | Ire - English |
| 61 | Cornelius Robinson | 12 | Son | — | Pennsylvania |
| 62 | Hunter Robinson | 10 | Son | — | Pennsylvania |
| 63 | Joseph Robinson | 8 | Son | — | Pennsylvania |
| 64 | Bridget O'Brien | 73 | Head | — | Ire - English |
| 65 | Mary Leahy | 74 | Sister | — | Ire - English |
| 66 | Marie O'Brien | 17 | Grand-daughter | — | Pennsylvania |
| 67 | Robert Martin | 34 | Head | Laborer | Ire - English |
| 68 | Edna Martin | 26 | Wife | — | Pennsylvania |
| 69 | Thomas Martin | 4 | Son | — | Pennsylvania |
| 70 | Michael J Finnegan | 39 | Head | Salesman | Ire - English |
| 71 | Mary Finnegan | 25 | Wife | — | Ire - English |
| 72 | John Finnegan | 4 | Son | — | Pennsylvania |
| 73 | Michael Finnegan | 2 | Son | — | Pennsylvania |
| 74 | Mary Finnegan | 1 | Daughter | — | Pennsylvania |
| 75 | Delia Finnegan | 0 | Daughter | — | Pennsylvania |
| 76 | Richard Mcnamara | 37 | Head | Machinist | Pennsylvania |
| 77 | Elizabeth Mcnamara | 32 | Wife | — | Pennsylvania |
| 78 | John Mcnamara | 13 | Son | — | Pennsylvania |
| 79 | Margaret Mcnamara | 11 | Daughter | — | Pennsylvania |
| 80 | Elizabeth Mcnamara | 8 | Daughter | — | Pennsylvania |
| 81 | Joseph Mcnamara | 5 | Daughter | — | Pennsylvania |
| 82 | Catherine Mcnamara | 4 | Daughter | — | Pennsylvania |
| 83 | Maria Mcnamara | 3 | Daughter | — | Pennsylvania |
| 84 | Nellie Mcnamara | 0 | Daughter | — | Pennsylvania |
| 85 | Samuel B Young | 35 | Head | Gas Maker | Pennsylvania |
| 86 | Annie Young | 34 | Wife | Button Hole Maker | Pennsylvania |
| 87 | Tommaso Massaro | 34 | Head | Lamplighter | Italy - Italian |
| 88 | Angelo Massaro | 15 | Brother | — | Italy - Italian |
| 89 | John J Cassidy | 44 | Head | Clerk | Pennsylvania |
| 90 | Alice G Cassidy | 31 | Wife | — | Pennsylvania |
| 91 | John Cassidy | 13 | Son | — | Pennsylvania |
| 92 | Helen Cassidy | 10 | Daughter | — | Pennsylvania |
| 93 | James Cassidy | 6 | Son | — | Pennsylvania |
| 94 | Alice Cassidy | 4 | Daughter | — | Pennsylvania |
| 95 | William Cassidy THIS PERSON | 1 | Son | — | Pennsylvania |
| 96 | Charles Callahan | 35 | Head | Painter | Pennsylvania |
| 97 | Bertha Callahan | 25 | Wife | — | Ger - German |
| 98 | Helen Callahan | 6 | Daughter | — | Pennsylvania |
| 99 | Agnes Callahan | 4 | Daughter | — | Pennsylvania |
| 100 | George Callahan | 3 | Son | — | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1910 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)