MC
Mary Corcoran — 1930 US Census Record
Model Tree available1930 United States Federal Census · Denver, Colorado
Our Model Tree links this Mary Corcoran across the 1910, 1920 and 1930 US Censuses in Denver, Colorado (XGBoost, ~Confirmed), with identified parents Michael & Nicholas — first a daughter (b.~1893), then head of a 10-person household.
Age 37
b. ~1893
Female
Daughter
Born: Colorado
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Denver, Colorado |
| Surname | Corcoran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Wholesale Electric |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Bookkeeper |
| Township / Ward | Denver City |
| Est. Birth Year | ~1893 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Corcoran | Daughter | — | 37 | ~1893 |
| Rose Corcoran | Daughter | — | 29 | ~1901 |
| James Corcoran | Son | — | 23 | ~1907 |
| William Corcoran | Son | — | 27 | ~1903 |
| Robert Corcoran | Son | — | 18 | ~1912 |
| Mary Corcoran | Spouse | — | 60 | ~1870 |
| Katherine Corcoran | Daughter | — | 33 | ~1897 |
| Edward Corcoran | Son | — | 21 | ~1909 |
| William Corcoran | Head | — | 67 | ~1863 |
| John Corcoran | Son | — | 25 | ~1905 |
Census Appearances
1910
Denver, Colorado
Daughter, age 20
Denver, Colorado · implied b. ~1890 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Corcoran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1920
Denver, Colorado
Daughter, age 29
Denver, Colorado · implied b. ~1891 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Corcoran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Booklady |
| Industry | Elect. Coal Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Denver, Colorado
Daughter, age 37
Denver, Colorado · implied b. ~1893 — 10 household members
| Surname | Corcoran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Bookkeeper |
| Industry | Wholesale Electric |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Corcoran across 3 US Census years (1910, 1920 and 1930) in Denver, Colorado, using XGBoost record linkage. Identified parents: father Michael Corcoran (~0.92 confidence) and father Nicholas Corcoran (~0.92 confidence) and father William Corcoran (~0.92 confidence) and mother Alice Corcoran (~0.92 confidence) and mother Alice Corcoran (~0.92 confidence) and mother Mary Corcoran (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Corcoran
b. ~1862
Source father
● Household
· direct · ~0.92
Father
Nicholas Corcoran
b. ~1869
Source father
● Household
· direct · ~0.92
Father
William Corcoran
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Alice Corcoran
b. ~1865
Source mother
● Household
· direct · ~0.92
Mother
Alice Corcoran
b. ~1869
Source mother
● Household
· direct · ~0.92
Mother
Mary Corcoran
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Corcoran
Daughter · 1930 · age 37 · b. ~1893 · Colorado
★ You are viewing this record
Sibling
Katherine Corcoran
Sibling · 1930 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Corcoran
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Corcoran
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Corcoran
Sibling · 1930 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Corcoran
Sibling · 1930 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Corcoran
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Corcoran
Sibling · 1930 · age 25
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 — Denver, Colorado
Open full size
1930 US Federal Census — Denver, Colorado
Page Contents
50 people indexed on this census page (ia:1930:15thcensus239unitrs:0326)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Hans Hansen | 72 | Head | — | Denmark |
| 52 | Anna Hansen | 72 | Wife | — | Denmark |
| 53 | Hans Hansen | 32 | Son | Machinist | Colorado |
| 54 | Jacob Kaufman | 58 | Head | Salesman | Russia |
| 55 | Amelia Kaufman | 58 | Wife | — | Russia |
| 56 | James F. Root | 61 | Head | Painter | New York |
| 57 | Mary Root | 61 | Wife | — | New York |
| 58 | James Root | 21 | Son | Painter | Colorado |
| 59 | John Root | 17 | Son | — | Colorado |
| 60 | Edward Root | 15 | Son | — | Colorado |
| 61 | Robert Root | 11 | Son | — | Colorado |
| 62 | James Harmon | 55 | Head | Machinist | Kansas |
| 63 | Lydia E. Harmon | 55 | Wife | — | Kansas |
| 64 | Robert S. Harmon | 25 | Son | Machinist | Colorado |
| 65 | Lydia Harmon | 22 | Daughter | — | Colorado |
| 66 | James Harmon | 19 | Son | — | Colorado |
| 67 | John Harmon | 15 | Son | — | Colorado |
| 68 | Charles Harmon | 12 | Son | — | Colorado |
| 69 | George Harmon | 10 | Son | — | Colorado |
| 70 | William Harmon | 8 | Son | — | Colorado |
| 71 | Frank Harmon | 6 | Son | — | Colorado |
| 72 | Mary Harmon | 4 | Daughter | — | Colorado |
| 73 | Ruth Harmon | 2 | Daughter | — | Colorado |
| 74 | Fred O'Neill | 41 | Head | Proprietor | Colorado |
| 75 | Mary O'Neill | 35 | Wife | — | Colorado |
| 76 | Fred O'Neill | 5 | Son | — | Colorado |
| 77 | John Snyder | 32 | Head | Clerk | Missouri |
| 78 | Mary Snyder | 32 | Wife | — | Missouri |
| 79 | John Snyder | 5 | Son | — | Colorado |
| 80 | James Turner | 51 | Head | Fireman | Iowa |
| 81 | Anna Turner | 50 | Wife | — | New York |
| 82 | James Black | 44 | Head | Clerk | Colorado |
| 83 | Edith Black | 40 | Wife | — | Colorado |
| 84 | James Black | 19 | Son | Clerk | Colorado |
| 85 | Robert Black | 17 | Son | Clerk | Colorado |
| 86 | William Corcoran | 67 | Head | — | Ireland |
| 87 | Mary Corcoran | 60 | Wife | — | Ireland |
| 88 | Mary Corcoran THIS PERSON | 37 | Daughter | Bookkeeper | Colorado |
| 89 | Katherine Corcoran | 33 | Daughter | Stenographer | Colorado |
| 90 | Rose Corcoran | 29 | Daughter | Stenographer | Colorado |
| 91 | William Corcoran | 27 | Son | Manager | Colorado |
| 92 | John Corcoran | 25 | Son | Solicitor | Colorado |
| 93 | James Corcoran | 23 | Son | — | Colorado |
| 94 | Edward Corcoran | 21 | Son | Operator | Colorado |
| 95 | Robert Corcoran | 18 | Son | Laborer | Colorado |
| 96 | Elizabeth Spangler | 72 | Head | — | Kentucky |
| 97 | James Spangler | 42 | Son | Proprietor | Kansas |
| 98 | Emma Spangler | 33 | Daughter | Bookkeeper | Kansas |
| 99 | Anna Spangler | 31 | Daughter | Clerk | Kansas |
| 100 | Robert Spangler | 29 | Son | Baker | Kansas |
Pedigree Summary
Mary + 7 siblings
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
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)