MD
Mary Donnelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Mary Donnelly across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1885), then head of a 10-person household.
Age 55
b. ~1885
Female
Spouse
Born: Northern Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Donnelly |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Northern Ireland |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | northern ireland |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1885 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Donnelly | Daughter | — | 21 | ~1919 |
| Susan Donnelly | Daughter | — | 23 | ~1917 |
| Mary Donnelly | Daughter | — | 11 | ~1929 |
| John Donnelly | Head | — | 62 | ~1878 |
| Mary Nicholson | Other | — | 70 | ~1870 |
| Chas Donnelly | Son | — | 25 | ~1915 |
| John Donnelly | Son | — | 27 | ~1913 |
| Francis Donnelly | Son | — | 18 | ~1922 |
| Daniel Donnelly | Son | — | 15 | ~1925 |
| Mary Donnelly | Spouse | — | 55 | ~1885 |
Census Appearances
1930
Philadelphia, Pennsylvania
Other, age 49
Philadelphia, Pennsylvania · implied b. ~1881 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Margaret J. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Northern Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1894 |
| Age at First Marriage | 22 |
| Father's Birthplace | Northern Ireland |
| Mother's Birthplace | Northern Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birthplace (normalized) | northern ireland |
1940
Philadelphia-County, Pennsylvania
Spouse, age 55
Philadelphia-County, Pennsylvania · implied b. ~1885 — 10 household members
| Surname | Donnelly |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Northern Ireland |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | northern ireland |
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 Donnelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Donnelly
Spouse · 1940 · age 55 · b. ~1885 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03733-00131)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bernard Sackoff | 53 | Head | Proprietor | Russia |
| 2 | Anna L. Sackoff | 46 | Wife | — | Penna |
| 3 | George Kessler | 32 | Son-in-law | Salesman | Penna |
| 4 | Frances Kessler | 24 | Daughter | — | Penna |
| 5 | Florence Clementi | 23 | Head | Salesgirl | Penna |
| 6 | Emma Petrillo | 20 | Sister | Salesgirl | Penna |
| 7 | Evelyn Greenwald | 25 | Head | Operator | Penna |
| 8 | Harry F. Mayville | 53 | Head | Plasterer | New York |
| 9 | Winifred Mayville | 58 | Wife | — | Eire |
| 10 | Harry Jr. Mayville | 26 | Son | Auto Mechanic | Penna |
| 11 | Mary E. Mayville | 23 | Daughter | Hairdresser | Penna |
| 12 | William Mayville | 20 | Son | Driver | Penna |
| 13 | George Greene | 23 | Head | Tailor | New Jersey |
| 14 | Mildred Greene | 25 | Wife | — | Ohio |
| 15 | James Simmons | 9 | Son | — | Ohio |
| 16 | Wm. C. Crocker | 24 | Head | Cook | North Carolina |
| 17 | Louise Crocker | 25 | Wife | — | Virginia |
| 18 | Nancy Ely Crocker | 0 | Daughter | — | Penna |
| 19 | Ellen Yorke | 35 | Head | Cost Clerk | Penna |
| 20 | Harold Harbrooke | 46 | Head | Laundry | Penna |
| 21 | Frances Harbrooke | 50 | Wife | Laundry | Penna |
| 22 | Samuel Klieman | 47 | Head | Paperhanger | Russia |
| 23 | John A. Donnelly | 62 | Head | Machinist | Northumberland |
| 24 | Mary A. Donnelly THIS PERSON | 55 | Wife | — | Northern Ireland |
| 25 | John V. Donnelly | 27 | Son | Machinist | Penna |
| 26 | Chas. P. Donnelly | 25 | Son | Laborer | Penna |
| 27 | Susan Donnelly | 23 | Daughter | Clerk | Penna |
| 28 | Catherine Donnelly | 21 | Daughter | Clerk | Penna |
| 29 | Francis Donnelly | 18 | Son | — | Penna |
| 30 | Daniel Donnelly | 15 | Son | — | Penna |
| 31 | Mary Donnelly | 11 | Daughter | — | Penna |
| 32 | Mary Nicholson | 70 | Lodger | — | Eire |
| 33 | Mary J. Keeley | 79 | Head | — | Ohio |
| 34 | George W. Bowman | 65 | Lodger | — | Penna |
| 35 | Margaret Granger | 69 | Head | — | Virginia |
| 36 | Wm. E. Granger | 42 | Son | Clerk | Virginia |
| 37 | Edgar W. Granger | 45 | Son | Guard | Virginia |
| 38 | John Gunther | 46 | Lodger | Guard | Penna |
| 39 | Joseph Dofcak | 35 | Lodger | Bookbinder | Illinois |
| 40 | James D. Cunningham | 74 | Lodger | — | Penna |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)