MC
Mary Connelly — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Lackawanna, Pennsylvania
Our Model Tree links this Mary Connelly across the 1930 and 1940 US Censuses in Lackawanna, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 9-person household.
Age 16
b. ~1914
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Lackawanna, Pennsylvania |
| Surname | Connelly |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Additional Details | |
| Occupation | Librarian |
| Industry | Public Library |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Librarian |
| Township / Ward | Lackawanna Township |
| Est. Birth Year | ~1914 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Cornelius Connelly | Son | — | 21 | ~1909 |
| Teresa Connelly | Daughter | — | 6 | ~1924 |
| Edward Connelly | Son | — | 14 | ~1916 |
| Patrick Connelly | Son | — | 8 | ~1922 |
| Patrick Connelly | Head | — | 34 | ~1896 |
| Mary Connelly | Spouse | — | 42 | ~1888 |
| Thelma Connelly | Daughter | — | 12 | ~1918 |
| Mary Connelly | Daughter | — | 16 | ~1914 |
| Catherine Connelly | Daughter | — | 8 | ~1922 |
Census Appearances
1930
Lackawanna, Pennsylvania
Daughter, age 16
Lackawanna, Pennsylvania · implied b. ~1914 — 9 household members
| Surname | Connelly |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Librarian |
| Industry | Public Library |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lackawanna-County, Pennsylvania
Other, age 27
Lackawanna-County, Pennsylvania · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | Mary |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Divorced |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | CARBONDALE City |
| 1935 Residence (County) | LACKAWANNA |
| Occupation | House Worker |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 208 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| 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 Connelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Connelly
Daughter · 1930 · age 16 · b. ~1914 · Pennsylvania
★ You are viewing this record
Sibling
Patrick Connelly
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Connelly
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cornelius Connelly
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Connelly
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Connelly
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Teresa Connelly
Sibling · 1930 · 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
1930 US Federal Census — Lackawanna, Pennsylvania
Open full size
1930 US Federal Census — Lackawanna, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2049:1061)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Joseph Beardon | 5 | Son | — | Pennsylvania |
| 52 | Ann Beardon | 1 | Daughter | — | Pennsylvania |
| 53 | Daniel Beardon | 31 | Head | Agent | Pennsylvania |
| 54 | Mary Beardon | 32 | Wife | — | Pennsylvania |
| 55 | Ursula Beardon | 9 | Daughter | — | Pennsylvania |
| 56 | Lucille Beardon | 6 | Daughter | — | Pennsylvania |
| 57 | Gerald Beardon | 1 | Son | — | Pennsylvania |
| 58 | James Jeffers | 59 | Head | Foreman | Pennsylvania |
| 59 | Mary Jeffers | 52 | Wife | — | Pennsylvania |
| 60 | Catherine Jeffers | 57 | Sister | Teacher | Pennsylvania |
| 61 | Patrick Connelly | 34 | Head | Watchman | England |
| 62 | Mary Connelly | 42 | Wife | — | England |
| 63 | Cornelius Connelly | 21 | Son | Machinist | Pennsylvania |
| 64 | Edward Connelly | 14 | Son | Delivery Boy | Pennsylvania |
| 65 | Mary Connelly THIS PERSON | 16 | Daughter | Librarian | Pennsylvania |
| 66 | Thelma Connelly | 12 | Daughter | — | Pennsylvania |
| 67 | Patrick Connelly | 8 | Son | — | Pennsylvania |
| 68 | Catherine Connelly | 8 | Daughter | — | Pennsylvania |
| 69 | Teresa Connelly | 6 | Daughter | — | Pennsylvania |
| 70 | Michael Walsh | 40 | Head | Brakeman | Irish Free State |
| 71 | Sarah Walsh | 40 | Wife | — | Pennsylvania |
| 72 | Pearl Walsh | 17 | Daughter | — | Pennsylvania |
| 73 | Dorothy Walsh | 15 | Daughter | — | Pennsylvania |
| 74 | Rita Walsh | 13 | Daughter | — | Pennsylvania |
| 75 | Robert Walsh | 12 | Son | — | Pennsylvania |
| 76 | Rosemary Walsh | 10 | Daughter | — | Pennsylvania |
| 77 | Lucille Walsh | 7 | Daughter | — | Pennsylvania |
| 78 | Michael Jr. Walsh | 6 | Son | — | Pennsylvania |
| 79 | James Walsh | 4 | Son | — | Pennsylvania |
| 80 | Alice Walsh | 2 | Daughter | — | Pennsylvania |
| 81 | Joan Walsh | 0 | Daughter | — | Pennsylvania |
| 82 | Anna Coyne | 49 | Head | — | Irish Free State |
| 83 | Martin Coyne | 24 | Son | Teller | Pennsylvania |
| 84 | Joseph Coyne | 22 | Son | Accountant | Pennsylvania |
| 85 | Andrew Coyne | 19 | Son | Insulator | Pennsylvania |
| 86 | Robert Coyne | 17 | Son | Helper | Pennsylvania |
| 87 | Mary Coyne | 14 | Daughter | — | Pennsylvania |
| 88 | Catherine Coyne | 11 | Daughter | — | Pennsylvania |
| 89 | Madelyn Coyne | 8 | Daughter | — | Pennsylvania |
| 90 | John Coyne | 34 | Head | Laborer | Pennsylvania |
| 91 | Ida Coyne | 31 | Wife | — | Pennsylvania |
| 92 | John Coyne | 12 | Son | — | Pennsylvania |
| 93 | Agnes Coyne | 11 | Daughter | — | Pennsylvania |
| 94 | James Coyne | 8 | Son | — | Pennsylvania |
| 95 | Patrick Coyne | 6 | Son | — | Pennsylvania |
| 96 | Lillian Coyne | 4 | Daughter | — | Pennsylvania |
| 97 | Ruth Coyne | 2 | Daughter | — | Pennsylvania |
| 98 | John J. Joyce | 68 | Head | — | Irish Free State |
| 99 | John Joyce | 37 | Son | Laborer | Pennsylvania |
| 100 | Michael Joyce | 29 | Son | Brakeman | 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)