WC
William Cassidy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this William Cassidy across the 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 8-person household.
Age 50
b. ~1880
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Cassidy |
| Given Name | William D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 26 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Pipe Fitter |
| Industry | Disposal Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Pipe Fitter |
| Est. Birth Year | ~1880 |
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 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Catherine Cassidy | Son | — | 24 | ~1906 |
| Chester Cassidy | Son | — | 19 | ~1911 |
| Richard Cassidy | Other | — | ~1930 | |
| Ethel Cassidy | Daughter | — | 17 | ~1913 |
| Thomas Cassidy | Son | — | 8 | ~1922 |
| Robert Cassidy | Son | — | 21 | ~1909 |
| William Cassidy | Head | — | 50 | ~1880 |
| Lomas Cassidy | Other | — | 19 | ~1911 |
Census Appearances
1920
Baltimore, Maryland
Son, age 39
Baltimore, Maryland · implied b. ~1881 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | William Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Huckster |
| Industry | street |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 50
Baltimore, Maryland · implied b. ~1880 — 8 household members
| Surname | Cassidy |
| Given Name | William D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 26 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Pipe Fitter |
| Industry | Disposal Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 (1920 and 1930) in Baltimore, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
William Cassidy
Head · 1930 · age 50 · b. ~1880 · Maryland
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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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus866unit:1015)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | William D. Cassidy THIS PERSON | 50 | Head | Pipe Fitter | Maryland |
| 52 | Catherine M. Cassidy | 24 | Son | Laborer | Maryland |
| 53 | Chester G. Cassidy | 19 | Son | Laborer | Maryland |
| 54 | Ethel E. Cassidy | 17 | Daughter | Machine Hand | Maryland |
| 55 | Thomas E. Cassidy | 8 | Son | — | Maryland |
| 56 | Robert O. Cassidy | 21 | Son | Machine Hand | Maryland |
| 57 | Lomas M. Cassidy | 19 | Daughter in law | — | Virginia |
| 58 | Richard R. Cassidy | 0 | Grandson | — | Maryland |
| 59 | George J. Magee | 44 | Head | Foreman | Maryland |
| 60 | Mary E. Magee | 48 | Wife | — | Maryland |
| 61 | Evelyn Magee | 11 | Daughter | — | Maryland |
| 62 | William Thompson | 43 | Head | Machinist | Maryland |
| 63 | Carrie Thompson | 37 | Wife | — | Maryland |
| 64 | Thelma E. Thompson | 17 | Daughter | Assorter | Maryland |
| 65 | William H. Thompson | 5 | Son | — | Maryland |
| 66 | William Malsgleam | 43 | Brother | Blacksmith | Maryland |
| 67 | Paul Becker | 39 | Head | Plumber | Maryland |
| 68 | Adelaide Becker | 33 | Wife | — | Maryland |
| 69 | Paul Becker | 12 | Son | — | Maryland |
| 70 | — | None | — | — | — |
| 71 | — | None | — | — | — |
| 72 | — | None | — | — | — |
| 73 | — | None | — | — | — |
| 74 | — | None | — | — | — |
| 75 | — | None | — | — | — |
| 76 | — | None | — | — | — |
| 77 | — | None | — | — | — |
| 78 | — | None | — | — | — |
| 79 | — | None | — | — | — |
| 80 | — | None | — | — | — |
| 81 | — | None | — | — | — |
| 82 | — | None | — | — | — |
| 83 | — | None | — | — | — |
| 84 | — | None | — | — | — |
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| 86 | — | None | — | — | — |
| 87 | — | None | — | — | — |
| 88 | — | None | — | — | — |
| 89 | — | None | — | — | — |
| 90 | — | None | — | — | — |
| 91 | — | None | — | — | — |
| 92 | — | None | — | — | — |
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| 94 | — | None | — | — | — |
| 95 | — | None | — | — | — |
| 96 | — | None | — | — | — |
| 97 | — | None | — | — | — |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
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)