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Mary Welch — 1920 US Census Record
Model Tree available1920 United States Federal Census · Denver, Colorado
Our Model Tree links this Mary Welch across the 1900, 1910 and 1920 US Censuses in Denver, Colorado (XGBoost, ~Confirmed), with identified parents Mary & Mary — first a daughter (b.~1900), then head of a 4-person household.
Age 20
b. ~1900
Female
Daughter
Born: Colorado
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Denver, Colorado |
| Surname | Welch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Coal Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Stenographer |
| Township / Ward | Denver City |
| Est. Birth Year | ~1900 |
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.
4 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Florence Welch | Daughter | — | 24 | ~1896 |
| Mary Welch | Daughter | — | 20 | ~1900 |
| Michael Welch | Head | — | 55 | ~1865 |
| Mary Welch | Spouse | — | 57 | ~1863 |
Census Appearances
1900
Arapahoe, Colorado
Daughter, age
Arapahoe, Colorado · implied b. ~1900 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Marital Status | Single |
| Birthplace | Colorado |
| Birth Month | Mch |
| Birth Year | 1900 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Illinois |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1910
Denver, Colorado
Daughter, age 10
Denver, Colorado · implied b. ~1900 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1920
Denver, Colorado
Daughter, age 20
Denver, Colorado · implied b. ~1900 — 4 household members
| Surname | Welch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Illinois |
| Occupation | Stenographer |
| Industry | Coal Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | 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 Welch across 3 US Census years (1900, 1910 and 1920) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Welch (~0.92 confidence) and mother Mary Welch (~0.92 confidence) and father Michael Welch (~0.92 confidence) and father Michael Welch (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Welch
b. ~1862
Source mother
● Household
· direct · ~0.92
Mother
Mary Welch
b. ~1863
Source mother
● Household
· direct · ~0.92
Father
Michael Welch
b. ~1864
Source father
● Household
· direct · ~0.92
Father
Michael Welch
b. ~1864
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Welch
Daughter · 1920 · age 20 · b. ~1900 · Colorado
★ You are viewing this record
Sibling
Florence Welch
Sibling · 1920 · age 24
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 — Denver, Colorado
Open full size
1920 US Federal Census — Denver, Colorado
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu159unit:0144)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hattie Kroehner | 50 | Wife | — | Germany |
| 2 | Grace Kroehner | 22 | Daughter | Supervisor | Colorado |
| 3 | Mable Kroehner | 18 | Daughter | Clerk | Colorado |
| 4 | John Kroehner | 17 | Son | Clerk | Colorado |
| 5 | Elizabeth Kroehner | 14 | Daughter | — | Colorado |
| 6 | Frank Kroehner | 12 | Son | — | Colorado |
| 7 | Clarence E. Mayer | 42 | Head | Salesman | Kansas |
| 8 | Frances Mayer | 42 | Wife | — | Scotland |
| 9 | Thomas Eccles | 52 | Head | Laborer | Illinois |
| 10 | Mary Eccles | 48 | Wife | — | Indiana |
| 11 | Edward D. Leavitt | 60 | Head | Carpenter | Vermont |
| 12 | Nellie L. Leavitt | 46 | Wife | — | Colorado |
| 13 | Edgar F. Leavitt | 22 | Son | Truck Driver | Colorado |
| 14 | Florence B. Leavitt | 20 | Daughter | Iron Lady | Colorado |
| 15 | Mary R. Leavitt | 17 | Daughter | — | Colorado |
| 16 | Opal M. Leavitt | 11 | Daughter | — | Colorado |
| 17 | Alfred R. Leavitt | 4 | Son | — | Colorado |
| 18 | Frank E. Mccabe | 45 | Head | Detective | Missouri |
| 19 | Agness Mccabe | 44 | Wife | — | Wisconsin |
| 20 | Mary Murphy | 66 | Mother-in-law | — | Pennsylvania |
| 21 | Frederick Wolfgang | 21 | Head | Lead Burner | Missouri |
| 22 | Marie Wolfgang | 20 | Wife | — | Colorado |
| 23 | Frederick L. Wolfgang | 0 | Son | — | Colorado |
| 24 | Edwin H. Schott | 59 | Head | Fireman | Illinois |
| 25 | Minnie Schott | 56 | Wife | — | Wisconsin |
| 26 | Mable Gander | 22 | Step-daughter | Stenographer | Colorado |
| 27 | Robert W. Schott | 8 | Son | — | Colorado |
| 28 | William Hirt | 33 | Head | Engineer | Indiana |
| 29 | Mildred Hirt | 24 | Wife | Saleslady | Colorado |
| 30 | Dorothy Hirt | 5 | Daughter | — | Colorado |
| 31 | Harrison B. Decker | 29 | Nephew | Fireman | Illinois |
| 32 | Michael J. Welch | 55 | Head | Letter Carrier | Massachusetts |
| 33 | Mary E. Welch | 57 | Wife | — | Illinois |
| 34 | Florence Welch | 24 | Daughter | Telephone Opr. | Colorado |
| 35 | Mary Welch THIS PERSON | 20 | Daughter | Stenographer | Colorado |
| 36 | John M. Ludlow | 39 | Head | Merchant | Ohio |
| 37 | Hettie Ludlow | 38 | Wife | — | Tennessee |
| 38 | Mary Ludlow | 15 | Daughter | — | Kentucky |
| 39 | John Ludlow | 14 | Son | — | Alabama |
| 40 | Allen Ludlow | 12 | Son | — | Alabama |
| 41 | Clara Ludlow | 9 | Daughter | — | Colorado |
| 42 | Charles Ludlow | 3 | Son | — | Colorado |
| 43 | Grace Ludlow | 1 | Daughter | — | Colorado |
| 44 | Fred Fabrig | 56 | Head | — | Mecklenburg |
| 45 | Tessa Fabrig | 56 | Wife | — | Mecklenburg |
| 46 | Gus Fabrig | 28 | Son | Laborer | Texas |
| 47 | Mary Fabrig | 21 | Daughter | Bookkeeper | Texas |
| 48 | Amelia Fabrig | 20 | Daughter | Telegraph Opr. | Texas |
| 49 | Minnie Fabrig | 17 | Daughter | Telegraph Opr. | Texas |
| 50 | Charles Fabrig | 15 | Son | Laborer | Oklahoma |
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 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)