MC
Mary Clifford — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this Mary Clifford across the 1910 and 1920 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1907), then head of a 7-person household.
Age 13
b. ~1907
Female
Daughter
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Philadelphia, Pennsylvania |
| Surname | Clifford |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1907 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Clifford | Daughter | — | 13 | ~1907 |
| Margaret Clifford | Daughter | — | 20 | ~1900 |
| Thomas Clifford | Son | — | 17 | ~1903 |
| Elizabeth Clifford | Head | — | 42 | ~1878 |
| Agnes Clifford | Daughter | — | 21 | ~1899 |
| Daniel Clifford | Son | — | 8 | ~1912 |
| Elizabeth Clifford | Daughter | — | 19 | ~1901 |
Census Appearances
1910
Philadelphia, Pennsylvania
Daughter, age 3
Philadelphia, Pennsylvania · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clifford |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Daughter, age 13
Philadelphia, Pennsylvania · implied b. ~1907 — 7 household members
| Surname | Clifford |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | 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 Clifford across 2 US Census years (1910 and 1920) in Philadelphia, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Clifford
Daughter · 1920 · age 13 · b. ~1907 · Pennsylvania
★ You are viewing this record
Sibling
Thomas Clifford
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Clifford
Sibling · 1920 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Clifford
Sibling · 1920 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Clifford
Sibling · 1920 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Clifford
Sibling · 1920 · age 20
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
1920 US Federal Census — Philadelphia, Pennsylvania
Open full size
1920 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1638unit:0678)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Marie Kelly | 6 | Daughter | — | Pennsylvania |
| 52 | Jacob Belfus | 31 | Head | Shoemaker | Russia |
| 53 | Ida Belfus | 28 | Wife | — | Russia |
| 54 | Lena Belfus | 8 | Daughter | — | Pennsylvania |
| 55 | Eda Belfus | 7 | Daughter | — | Pennsylvania |
| 56 | Morris Belfus | 4 | Son | — | Pennsylvania |
| 57 | Goldie Belfus | 53 | Mother | — | Russia |
| 58 | Edward Hefferan | 58 | Head | Retailer | Massachusetts |
| 59 | Lucy Hefferan | 58 | Wife | — | Ireland |
| 60 | Kate Flowers | 40 | Servant | Cook | Pennsylvania |
| 61 | John Kane | 48 | Head | Rigger | Pennsylvania |
| 62 | Rose Kane | 41 | Wife | — | Pennsylvania |
| 63 | Mary M. Kane | 15 | Daughter | — | Pennsylvania |
| 64 | James Kane | 12 | Son | — | Pennsylvania |
| 65 | John E. Kane | 10 | Son | — | Pennsylvania |
| 66 | Rose Kane | 7 | Daughter | — | Pennsylvania |
| 67 | Anna Kane | 4 | Daughter | — | Pennsylvania |
| 68 | Charles Cort | 53 | Head | Carpenter | Ireland |
| 69 | Susan Cort | 53 | Wife | — | Ireland |
| 70 | John J. Cort | 23 | Son | Chauffeur | Pennsylvania |
| 71 | Robert O'Donnell | 48 | Head | Laborer | Ireland |
| 72 | Rebecca O'Donnell | 48 | Wife | — | Ireland |
| 73 | Margaret O'Donnell | 23 | Daughter | Winder | Pennsylvania |
| 74 | John O'Donnell | 21 | Son | Trucker | Pennsylvania |
| 75 | Jane O'Donnell | 20 | Daughter | Taper | Pennsylvania |
| 76 | Rebecca O'Donnell | 18 | Daughter | Book Binder | Pennsylvania |
| 77 | Mary O'Donnell | 16 | Daughter | — | Pennsylvania |
| 78 | William O'Donnell | 12 | Son | — | Pennsylvania |
| 79 | Hugh Mccarran | 70 | Father-in-law | Watchman | Ireland |
| 80 | William Galbraith | 48 | Head | Bricklayer | Pennsylvania |
| 81 | Sarah Galbraith | 47 | Wife | — | Ireland |
| 82 | William Galbraith | 24 | Son | Burner | Pennsylvania |
| 83 | Elizabeth Galbraith | 22 | Daughter | Labeler | Pennsylvania |
| 84 | Charles Galbraith | 19 | Son | Machinist | Pennsylvania |
| 85 | Thomas Galbraith | 17 | Son | Passerboy | Pennsylvania |
| 86 | John Galbraith | 14 | Son | — | Pennsylvania |
| 87 | Sarah Galbraith | 10 | Daughter | — | Pennsylvania |
| 88 | Elizabeth Clifford | 42 | Head | Inspectress | Ireland |
| 89 | Agnes Clifford | 21 | Daughter | Paper Box Maker | Pennsylvania |
| 90 | Margaret Clifford | 20 | Daughter | Box Maker | Pennsylvania |
| 91 | Elizabeth Clifford | 19 | Daughter | Box Maker | Pennsylvania |
| 92 | Thomas Clifford | 17 | Son | Office Boy | Pennsylvania |
| 93 | Mary Clifford THIS PERSON | 13 | Daughter | — | Pennsylvania |
| 94 | Daniel Clifford | 8 | Son | — | Pennsylvania |
| 95 | Anthony J. Smith | 53 | Head | Carpenter | New York |
| 96 | Julia E. Smith | 45 | Wife | — | New York |
| 97 | George Smith | 25 | Son | Carpenter | New York |
| 98 | Charles A. Smith | 19 | Son | Carpenter | New York |
| 99 | Ethel Smith | 16 | Daughter | — | New York |
| 100 | Theodore Meisler | 49 | Head | Machinist | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)