MM
Mary Mcdermott — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Wayne, Michigan
Our Model Tree links this Mary Mcdermott across the 1930 and 1940 US Censuses in Wayne, Michigan (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 9-person household.
Age 17
b. ~1913
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Wayne, Michigan |
| Surname | McDermott |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1913 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Mcdermott | Daughter | — | 6 | ~1924 |
| Mary Mcdermott | Daughter | — | 17 | ~1913 |
| Edward Mcdermott | Head | — | 42 | ~1888 |
| Bernard Mcdermott | Son | — | 11 | ~1919 |
| William Mcdermott | Son | — | 8 | ~1922 |
| Joseph Mcdermott | Son | — | 14 | ~1916 |
| Robert Mcdermott | Son | — | 2 | ~1928 |
| Edward Mcdermott | Son | — | 13 | ~1917 |
| Donald Mcdermott | Son | — | 5 | ~1925 |
Census Appearances
1930
Wayne, Michigan
Daughter, age 17
Wayne, Michigan · implied b. ~1913 — 9 household members
| Surname | McDermott |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Wayne-County, Michigan
Head, age 28
Wayne-County, Michigan · implied b. ~1912
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | MacDermott |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Highest Grade | No 4-4 |
| 1935 Residence | Same place |
| 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 Mcdermott across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcdermott
Daughter · 1930 · age 17 · b. ~1913 · Michigan
★ You are viewing this record
Sibling
Edward Mcdermott
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mcdermott
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mcdermott
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Mcdermott
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mcdermott
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Mcdermott
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mcdermott
Sibling · 1930 · age 14
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
1930 US Federal Census — Wayne, Michigan
Open full size
1930 US Federal Census — Wayne, Michigan
Page Contents
50 people indexed on this census page (ia:1930:michigancensus00reel1061:0163)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Henry Jr Tishoff | 6 | Son | — | Michigan |
| 2 | Stanley Fisher | 41 | Head | Conductor | Maryland |
| 3 | Helen Fisher | 37 | Wife | — | Michigan |
| 4 | Lawrence Fisher | 17 | Son | — | Michigan |
| 5 | Lloyd Fisher | 15 | Son | — | Michigan |
| 6 | Eleanor Fisher | 13 | Daughter | — | Michigan |
| 7 | Helen Fisher | 11 | Daughter | — | Michigan |
| 8 | Louis Fisher | 9 | Son | — | Michigan |
| 9 | Stanley Fisher | 7 | Son | — | Michigan |
| 10 | Alice Fisher | 5 | Daughter | — | Michigan |
| 11 | Geraldine Fisher | 2 | Daughter | — | Michigan |
| 12 | Thomas Fisher | 0 | Son | — | Michigan |
| 13 | Edward Mcdermott | 42 | Head | Machinist | Pennsylvania |
| 14 | Mary Mcdermott THIS PERSON | 17 | Daughter | — | Pennsylvania |
| 15 | Joseph Mcdermott | 14 | Son | — | Pennsylvania |
| 16 | Edward Mcdermott | 13 | Son | — | Pennsylvania |
| 17 | Bernard Mcdermott | 11 | Son | — | Pennsylvania |
| 18 | William Mcdermott | 8 | Son | — | Michigan |
| 19 | Donald Mcdermott | 5 | Son | — | Michigan |
| 20 | Catherine Mcdermott | 6 | Daughter | — | Michigan |
| 21 | Robert Mcdermott | 2 | Son | — | Michigan |
| 22 | Joseph Molnar | 52 | Head | Grocery | Hungary |
| 23 | Elizabeth Molnar | 40 | Wife | — | Hungary |
| 24 | Walter Burgess | 40 | Head | Drill Press | Scotland |
| 25 | Jean Burgess | 42 | Wife | — | Scotland |
| 26 | Jean Burgess | 17 | Daughter | Stenographer | Scotland |
| 27 | Lillian Burgess | 14 | Daughter | — | Scotland |
| 28 | Agnes Burgess | 11 | Daughter | — | Scotland |
| 29 | Duncan Macdonald | 45 | Head | Foreman | Michigan |
| 30 | Catherine Macdonald | 43 | Wife | — | Canada-English |
| 31 | Charles Macdonald | 16 | Son | — | Michigan |
| 32 | Robert Macdonald | 12 | Son | — | Michigan |
| 33 | Richard Macdonald | 11 | Son | — | Michigan |
| 34 | Kenneth Macdonald | 5 | Son | — | Michigan |
| 35 | Ellen Gavey | 69 | Mother-in-law | Housekeeper | England |
| 36 | Benny Tusauskas | 50 | Head | Shoe Repair | Lithuania |
| 37 | Anna Tusauskas | 40 | Wife | Punch Press | Lithuania |
| 38 | Stanley Tusauskas | 21 | Son | Apprentice | Lithuania |
| 39 | Caroline Chall | 60 | Head | — | Germany |
| 40 | Walter C. Chall | 41 | Son | Barber | Michigan |
| 41 | Harvey Chall | 28 | Son | Tool Maker | Michigan |
| 42 | Nettie Chall | 27 | Daughter | Stenographer | Michigan |
| 43 | David B. Downing | 52 | Head | Physician & Surgeon | Michigan |
| 44 | Kenneth Downing | 25 | Son | Adjuster | Michigan |
| 45 | Russell Y. Downing | 24 | Son | Inspector | Michigan |
| 46 | Marion Downing | 17 | Daughter | — | Michigan |
| 47 | Nellie Walter | 37 | Head | Machinist | Poland |
| 48 | Emley Walter | 34 | Wife | — | Poland |
| 49 | Walter Walter | 9 | Son | — | Michigan |
| 50 | Evelyn Walter | 7 | Daughter | — | Michigan |
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)