MM
Margaret Mcdermott — 1920 US Census Record
Linked across censuses1920 United States Federal Census · San Francisco, California
Our Model Tree links this Margaret Mcdermott across the 1910 and 1920 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a daughter (b.~1905), then head of a 9-person household.
Age 15
b. ~1905
Female
Daughter
Born: California
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | San Francisco, California |
| Surname | McDermott |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1905 |
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 1920 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Francis Mcdermott | Son | — | 13 | ~1907 |
| Bernice Mcdermott | Daughter | — | 15 | ~1905 |
| Charles Mcdermott | Head | — | 57 | ~1863 |
| William Mcdermott | Son | — | 23 | ~1897 |
| John Mcdermott | Son | — | 22 | ~1898 |
| Wife Mcdermott | Spouse | — | 51 | ~1869 |
| Margaret Mcdermott | Daughter | — | 15 | ~1905 |
| Mildred Mcdermott | Daughter | — | 17 | ~1903 |
| Charles Mcdermott | Son | — | 27 | ~1893 |
Census Appearances
1910
San Francisco, …
Daughter, age 6
San Francisco, California · implied b. ~1904 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | Mary I |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
San Francisco, …
Daughter, age 15
San Francisco, California · implied b. ~1905 — 9 household members
| Surname | McDermott |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Margaret Mcdermott across 2 US Census years (1910 and 1920) in San Francisco, California, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Mcdermott
Daughter · 1920 · age 15 · b. ~1905 · California
★ You are viewing this record
Sibling
Mildred Mcdermott
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcdermott
Sibling · 1920 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mcdermott
Sibling · 1920 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mcdermott
Sibling · 1920 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Mcdermott
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mcdermott
Sibling · 1920 · age 27
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 — San Francisco, California
Open full size
1920 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu134unit:0130)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Prat | 2 | Daughter | — | California |
| 52 | Prat | 51 | Lodger | Waiter | France |
| 53 | Prat | 33 | Lodger | Dresser | France |
| 54 | Prat | 41 | Lodger | Dresser | France |
| 55 | Prat | 31 | Lodger | Ironer | France |
| 56 | Milo Woods | 29 | Head | Electrician | California |
| 57 | Hazel Woods | 21 | Wife | — | California |
| 58 | Mary O'Rourke | 62 | Head | — | Ireland |
| 59 | Margaret O'Rourke | 22 | Daughter | Saleslady | California |
| 60 | Arthur Mccovery | 45 | Boarder | Horseshoer | Ireland |
| 61 | Charles Mcdermott | 57 | Head | Laborer | California |
| 62 | Wife Mcdermott | 51 | Wife | — | Massachusetts |
| 63 | Charles Mcdermott | 27 | Son | Helper | California |
| 64 | William Mcdermott | 23 | Son | Clerk | California |
| 65 | John Mcdermott | 22 | Son | Waiter | California |
| 66 | Mildred Mcdermott | 17 | Daughter | Operator | California |
| 67 | Bernice Mcdermott | 15 | Daughter | — | California |
| 68 | Margaret Mcdermott THIS PERSON | 15 | Daughter | — | California |
| 69 | Francis Mcdermott | 13 | Son | — | California |
| 70 | Frank Schuback | 38 | Head | Bartender | Oregon |
| 71 | Florence Schuback | 34 | Wife | — | California |
| 72 | Marion Schuback | 16 | Daughter | — | California |
| 73 | Wallace Schuback | 14 | Son | — | California |
| 74 | Fred Palmer | 35 | Head | Blue Print | Michigan |
| 75 | Bert Palmer | 47 | Brother | — | Michigan |
| 76 | Elizabeth Palmer | 71 | Mother | — | Michigan |
| 77 | E. C. Van Cleve | 42 | Head | Laborer | Illinois |
| 78 | Gertrude Van Cleve | 40 | Wife | Finisher | California |
| 79 | Estelle Van Cleve | 12 | Daughter | — | California |
| 80 | Harry H. Hall | 56 | Head | Bartender | Ohio |
| 81 | John Quigley | 38 | Head | Molder | Arizona |
| 82 | Edna Quigley | 35 | Wife | — | California |
| 83 | Albert Browne | 54 | Head | Salesman | Canada |
| 84 | Emily Browne | 48 | Wife | — | California |
| 85 | James Keith | 47 | Head | Shipping Clerk | New York |
| 86 | Josephine Keith | 36 | Wife | — | Nebraska |
| 87 | Al Waymire | 43 | Head | Chauffeur | United States |
| 88 | Alice Waymire | 31 | Wife | Clerk | Canada |
| 89 | Mary A. Adams | 57 | Head | — | California |
| 90 | Archibald Adams | 33 | Son | Clerk | California |
| 91 | Raymond Adams | 24 | Son | Fitter | California |
| 92 | Harold Adams | 35 | Son | — | California |
| 93 | Henrietta Meyers | 36 | Daughter | — | California |
| 94 | Charles G. Meyers | 8 | Grandson | — | California |
| 95 | Elizabeth Gilfroy | 48 | Head | — | California |
| 96 | James Gilfroy | 30 | Son | Fireman | California |
| 97 | Matthew Gilfroy | 22 | Son | — | California |
| 98 | Mary Gilfroy | 9 | Daughter | — | California |
| 99 | George Levens | 48 | Head | Helper | California |
| 100 | Annie Levens | 40 | Wife | — | California |
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)