MC
Mary Connelly — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Connelly across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1883), then head of a 8-person household.
Age 47
b. ~1883
Female
Spouse
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Connelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1883 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| John Connelly | Son | — | 17 | ~1913 |
| Patrick Connelly | Head | — | 49 | ~1881 |
| Bart Connelly | Son | — | 25 | ~1905 |
| Kathleen Connelly | Daughter | — | 12 | ~1918 |
| Mary Connelly | Daughter | — | 14 | ~1916 |
| James Connelly | Son | — | 23 | ~1907 |
| Francis Connelly | Son | — | 21 | ~1909 |
| Mary Connelly | Spouse | — | 47 | ~1883 |
Census Appearances
1930
Cook, Illinois
Spouse, age 47
Cook, Illinois · implied b. ~1883 — 8 household members
| Surname | Connelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 58
Cook-County, Illinois · implied b. ~1882 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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
Spouse · 1930 · age 47 · b. ~1883 · Illinois
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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 — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel442:0184)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Axel Peterson | 36 | Head | Machinist | Illinois |
| 52 | Alice Peterson | 35 | Wife | — | Illinois |
| 53 | Mary Ellen Peterson | 12 | Daughter | — | Illinois |
| 54 | Dorothy Peterson | 9 | Daughter | — | Illinois |
| 55 | Lorraine Catherine Peterson | 9 | Daughter | — | Illinois |
| 56 | Mary Peterson | 9 | Daughter | — | Illinois |
| 57 | Daniel Mcdougal | 38 | Head | Sheet Metal | Illinois |
| 58 | Anna Mcdougal | 39 | Wife | — | Illinois |
| 59 | George Brooman | 51 | Head | Collector | New York |
| 60 | Martha Mahoney | 25 | Daughter | — | Illinois |
| 61 | Dorothy Mahoney | 5 | Granddaughter | — | Illinois |
| 62 | Richard Mahoney | 3 | Grandson | — | Illinois |
| 63 | Patrick Connelly | 49 | Head | Plumber | Illinois |
| 64 | Mary Connelly THIS PERSON | 47 | Wife | — | Illinois |
| 65 | Bart Connelly | 25 | Son | Plumber | Illinois |
| 66 | James Connelly | 23 | Son | Clerk | Illinois |
| 67 | Francis Connelly | 21 | Son | Clerk | Illinois |
| 68 | John Connelly | 17 | Son | — | Illinois |
| 69 | Mary Connelly | 14 | Daughter | — | Illinois |
| 70 | Kathleen Connelly | 12 | Daughter | — | Illinois |
| 71 | Mary Shaunnessy | 45 | Head | Dressmaker | New York |
| 72 | William Shaunnessy | 19 | Son | Laborer | Illinois |
| 73 | James Shaunnessy | 16 | Son | — | Illinois |
| 74 | Thomas Shaunnessy | 10 | Son | — | Illinois |
| 75 | Thomas Greene | 64 | Head | — | New York |
| 76 | Hilda Greene | 62 | Wife | — | Sweden |
| 77 | John Greene | 30 | Son | Assembler | Wisconsin |
| 78 | Marie Greene | 21 | Daughter | Ironer | Wisconsin |
| 79 | Willard Greene | 17 | Son | Clerk | Wisconsin |
| 80 | Catherine Greene | 15 | Daughter | — | Wisconsin |
| 81 | Beatrice Greene | 10 | Daughter | — | Wisconsin |
| 82 | William Eddy | 33 | Head | Conductor | New York State |
| 83 | Mary Eddy | 32 | Wife | — | Illinois |
| 84 | William Eddy | 1 | Son | — | Illinois |
| 85 | Thomas Jordan | 60 | Head | Pile Driver | Pennsylvania |
| 86 | Bridget Jordan | 48 | Wife | — | Irish Free State |
| 87 | Marion Jordan | 25 | Daughter | Teacher | Illinois |
| 88 | Helen Jordan | 19 | Daughter | — | Illinois |
| 89 | Mary Hutchings | 52 | Head | Asst. Bookkeeper | Illinois |
| 90 | Madeline Hutchings | 19 | Niece | Clerk | Illinois |
| 91 | Austin Baker | 78 | Head | Veterinary Surgeon | England |
| 92 | M. Lu Ella Baker | 65 | Wife | — | Canada-Eng |
| 93 | George Fox | 42 | Head | — | Illinois |
| 94 | Frank Fox | 50 | Brother | — | Illinois |
| 95 | Bella Fox | 46 | Sister | Teacher | Illinois |
| 96 | Mary W. Fox | 41 | Sister | Teacher | Illinois |
| 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)