MC
Mary Cassidy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Berks, Pennsylvania
Our Model Tree links this Mary Cassidy across the 1920 and 1930 US Censuses in Berks, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 11-person household.
Age 15
b. ~1915
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Berks, Pennsylvania |
| Surname | Cassidy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Reading City |
| Est. Birth Year | ~1915 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edith Cassidy | Daughter | — | 20 | ~1910 |
| Angela Cassidy | Daughter | — | 6 | ~1924 |
| Margaret Cassidy | Daughter | — | 17 | ~1913 |
| Ruth Cassidy | Daughter | — | 12 | ~1918 |
| Mary Cassidy | Daughter | — | 15 | ~1915 |
| Louis Cassidy | Head | — | 46 | ~1884 |
| Catherine Cassidy | Other | — | 48 | ~1882 |
| Louis Cassidy | Son | — | 21 | ~1909 |
| Clare Cassidy | Son | — | 11 | ~1919 |
| Paul Cassidy | Son | — | 2 | ~1928 |
| David Cassidy | Son | — | 18 | ~1912 |
Census Appearances
1920
Berks, Pennsylvania
Daughter, age 5
Berks, Pennsylvania · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Berks, Pennsylvania
Daughter, age 15
Berks, Pennsylvania · implied b. ~1915 — 11 household members
| Surname | Cassidy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | 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 Mary Cassidy across 2 US Census years (1920 and 1930) in Berks, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cassidy
Daughter · 1930 · age 15 · b. ~1915 · Pennsylvania
★ You are viewing this record
Sibling
Angela Cassidy
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edith Cassidy
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Cassidy
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Cassidy
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Cassidy
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Cassidy
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Cassidy
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clare Cassidy
Sibling · 1930 · age 11
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
1930 US Federal Census — Berks, Pennsylvania
Open full size
1930 US Federal Census — Berks, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2001:1070)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ammon H White | 44 | Head | Foreman | Pennsylvania |
| 2 | Agnes H White | 39 | Wife-H | — | Pennsylvania |
| 3 | Ammon H Jr White | 20 | Son | Radio Engr | Pennsylvania |
| 4 | Agnes H White | 17 | Daughter | — | Pennsylvania |
| 5 | Clarence J Case | 55 | Head | Machinist | Pennsylvania |
| 6 | Florence M Case | 44 | Wife-H | Machine Op | Pennsylvania |
| 7 | Catherine R Case | 22 | Daughter | — | Pennsylvania |
| 8 | Mary E Case | 17 | Daughter | — | Pennsylvania |
| 9 | Harry J Case | 15 | Son | — | Pennsylvania |
| 10 | Thomas R Rapp | 70 | Head | — | Pennsylvania |
| 11 | Sarah E Rapp | 61 | Wife-H | — | Pennsylvania |
| 12 | Daniel A Butter | 54 | Head | Carpenter | Pennsylvania |
| 13 | Emma B Butter | 58 | Wife-H | — | Pennsylvania |
| 14 | William B Graeff | 41 | Head | Boarder | Pennsylvania |
| 15 | Maude Graeff | 41 | Wife-H | — | Pennsylvania |
| 16 | Dorothy J Graeff | 25 | Daughter | Teacher | Pennsylvania |
| 17 | George W Graeff | 20 | Son | Clerk | Pennsylvania |
| 18 | John S Sheetz | 62 | Head | Machinist | Pennsylvania |
| 19 | Lillie Sheetz | 51 | Wife-H | — | Pennsylvania |
| 20 | John S Jr Sheetz | 29 | Son | — | Pennsylvania |
| 21 | Ben J Butter | 33 | Head | Knitter | Pennsylvania |
| 22 | Catherine H Butter | 34 | Wife-H | — | Germany |
| 23 | Helen E Butter | 1 | Daughter | — | Pennsylvania |
| 24 | Louis M Cassidy | 46 | Head | Engineer | Pennsylvania |
| 25 | Catherine Cassidy | 48 | Wife-H | — | Pennsylvania |
| 26 | Louis M Cassidy | 21 | Son | Clerk | Pennsylvania |
| 27 | Edith M Cassidy | 20 | Daughter | Clerk | Pennsylvania |
| 28 | David G Cassidy | 18 | Son | Inspector | Pennsylvania |
| 29 | Margaret M Cassidy | 17 | Daughter | — | Pennsylvania |
| 30 | Mary Cassidy THIS PERSON | 15 | Daughter | — | Pennsylvania |
| 31 | Ruth Cassidy | 12 | Daughter | — | Pennsylvania |
| 32 | Clare F Cassidy | 11 | Son | — | Pennsylvania |
| 33 | Angela J Cassidy | 6 | Daughter | — | Pennsylvania |
| 34 | Paul Cassidy | 2 | Son | — | Pennsylvania |
| 35 | James G Cassidy | 42 | Head | Machinist | Pennsylvania |
| 36 | Ralph J Hague | 36 | Head | Housework | Pennsylvania |
| 37 | Helen H Hague | 34 | Wife-H | Yeoman | Pennsylvania |
| 38 | Percy S Smith | 46 | Head | Seaman | Pennsylvania |
| 39 | Mary M Smith | 45 | Wife-H | Boiler | Pennsylvania |
| 40 | Robert Smith | 28 | Son | — | Pennsylvania |
| 41 | John E Leitham | 56 | Head | Machinist | Pennsylvania |
| 42 | Mary A Leitham | 56 | Wife-H | Salesman | Pennsylvania |
| 43 | Augustus L Leitham | 26 | Son | — | Pennsylvania |
| 44 | Rose D Leitham | 14 | Daughter | Clerk | Pennsylvania |
| 45 | Aaron M Kline | 69 | Head | — | Pennsylvania |
| 46 | Mary M Kline | 61 | Wife-H | Cabinet Maker | Pennsylvania |
| 47 | Arthur S Kline | 43 | Son | — | Pennsylvania |
| 48 | Horace A Kline | 29 | Son | Handler | Pennsylvania |
| 49 | Paul P Kline | 27 | Son | Stock Carrier | Pennsylvania |
| 50 | Dorothy Kline | 23 | Daughter-in-law | Truck Driver | Pennsylvania |
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)