MC
Mary Clifford — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-York-County, New York
Our Model Tree links this Mary Clifford across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed), with identified parents Patrick & Thomas — first a daughter (b.~1916), then head of a 7-person household.
Age 24
b. ~1916
Female
Daughter
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Clifford |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1916 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thomas Krogh | Son | — | 22 | ~1918 |
| Theodore Clifford | Other | — | 3 | ~1937 |
| Thomas Krogh | Head | — | 58 | ~1882 |
| Theodore Clifford | Other | — | 23 | ~1917 |
| Mary Clifford | Daughter | — | 24 | ~1916 |
| Margaret Clifford | Other | — | 1 | ~1939 |
| Clara Krogh | Spouse | — | 59 | ~1881 |
Census Appearances
1920
New York, …
Daughter, age 3
New York, New York · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clifford |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Mother Tongue | Irish |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
New York, …
Daughter, age 13
New York, New York · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clifford |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
New-York-County, New …
Daughter, age 24
New-York-County, New York · implied b. ~1916 — 7 household members
| Surname | Clifford |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Industry | 0 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Clifford across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Patrick Clifford (~0.92 confidence) and father Thomas Krogh (~0.92 confidence) and mother Clara Krogh (~0.92 confidence) and mother Nellie Clifford (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Clifford
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Thomas Krogh
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Clara Krogh
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Nellie Clifford
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Clifford
Daughter · 1940 · age 24 · b. ~1916 · New York
★ You are viewing this record
Sibling
Thomas Krogh
Sibling · 1940 · age 22
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
1940 US Federal Census — New-York-County, New York
Open full size
1940 US Federal Census — New-York-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02642-01022)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Adaline Kirbyra | 32 | Wife | — | Pennsylvania |
| 2 | Nancy Kirbyra | 20 | Daughter | — | New York |
| 3 | Stanley Jr. Kirbyra | 6 | Son | — | New York |
| 4 | John Dorseri | 26 | Head | Theater Operator | New York |
| 5 | Stella Dorseri | 27 | Wife | — | Pennsylvania |
| 6 | Fred Higgins | 30 | Head | Soda Dispenser | Rhode Island |
| 7 | Jean Higgins | 28 | Wife | — | Pennsylvania |
| 8 | John Carey | 40 | Head | Laborer | Ireland |
| 9 | Margaret Carey | 35 | Wife | — | Ireland |
| 10 | Lorna Vandermark | 46 | Head | — | New York |
| 11 | James Williams | 76 | Friend | Hotel Supt. | England |
| 12 | Charles Alarcon | 37 | Head | Degreaser & Dyer | Cuba |
| 13 | Sylvia Alarcon | 29 | Wife | — | Cuba |
| 14 | Marion Alarcon | 8 | Daughter | — | Cuba |
| 15 | Charles Jr. Alarcon | 1 | Son | — | New York |
| 16 | Clara Voleix | 53 | Head | Maid | Hungary |
| 17 | Eleanor M. O'Hagan | 53 | Partner | Cook | Ireland |
| 18 | John Mcsizler | 30 | Head | Bartender | Connecticut |
| 19 | Betty Mcsizler | 21 | Wife | — | Massachusetts |
| 20 | Mary E. Mcsizler | 8 | Daughter | — | Rhode Island |
| 21 | Antonio Tarantino | 36 | Head | Janitor | Italy |
| 22 | Louise Tarantino | 28 | Wife | — | New York |
| 23 | Charles T. Swanson | 60 | Head | Chauffeur | Sweden |
| 24 | Hulda Swanson | 63 | Wife | — | Sweden |
| 25 | Gennaro Luizoni | 40 | Head | Store Clerk | Italy |
| 26 | Rachela Luizoni | 30 | Wife | — | Italy |
| 27 | Domenico Luizoni | 37 | Brother | Store Owner | Italy |
| 28 | Thomas Krogh | 58 | Head | Groom | Ireland |
| 29 | Clara Krogh | 59 | Wife | — | Ireland |
| 30 | Thomas H. Krogh | 22 | Son | Helper | New York |
| 31 | Theodore Clifford | 23 | Son-in-law | Mechanic'S Helper | New York |
| 32 | Mary Clifford THIS PERSON | 24 | Daughter | — | New York |
| 33 | Theodore Clifford | 3 | Grandson | — | New York |
| 34 | Margaret R. Clifford | 1 | Granddaughter | — | New York |
| 35 | Alexander M. Donnard | 36 | Head | Engineer | Hawaii |
| 36 | Hanna Donnard | 33 | Wife | — | Ohio |
| 37 | Jack Donnard | 8 | Son | — | California |
| 38 | Giacinto Linate | 37 | Head | Furnace Man | Italy |
| 39 | Michelina Linate | 40 | Wife | — | Italy |
| 40 | Rosana Linate | 7 | Daughter | — | New York |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)