MC
Mary Cahill — 1920 US Census Record
Model Tree available1920 United States Federal Census · Merrimack, New Hampshire
Our Model Tree links this Mary Cahill across the 1900, 1910 and 1920 US Censuses in Merrimack, New Hampshire (XGBoost, ~Confirmed), with identified parents Hannah & Maria — first a daughter (b.~1888), then head of a 3-person household.
Age 32
b. ~1888
Female
Daughter
Born: New Hampshire
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Merrimack, New Hampshire |
| Surname | Cahill |
| Given Name | Mary C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Occupation | Stenographer |
| Township / Ward | Concord City |
| Est. Birth Year | ~1888 |
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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cahill | Daughter | — | 32 | ~1888 |
| John Cahill | Son | — | 43 | ~1877 |
| Maria Cahill | Head | — | 68 | ~1852 |
Census Appearances
1900
Merrimack, New …
Daughter, age 13
Merrimack, New Hampshire · implied b. ~1887 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cahill |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Birth Month | Mar |
| Birth Year | 1887 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | At school |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1910
Merrimack, New …
Daughter, age 23
Merrimack, New Hampshire · implied b. ~1887 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cahill |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Ireland |
| Occupation | Stenographer |
| Industry | Insurance Office |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1920
Merrimack, New …
Daughter, age 32
Merrimack, New Hampshire · implied b. ~1888 — 3 household members
| Surname | Cahill |
| Given Name | Mary C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Stenographer |
| Industry | Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
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 Cahill across 3 US Census years (1900, 1910 and 1920) in Merrimack, New Hampshire, using XGBoost record linkage. Identified parents: mother Hannah Cahill (~0.92 confidence) and mother Maria Cahill (~0.92 confidence) and father Patrick Cahill (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Hannah Cahill
b. ~1850
Source mother
● Household
· direct · ~0.92
Mother
Maria Cahill
b. ~1852
Source mother
● Household
· direct · ~0.92
Father
Patrick Cahill
b. ~1853
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Cahill
Daughter · 1920 · age 32 · b. ~1888 · New Hampshire
★ You are viewing this record
Sibling
John Cahill
Sibling · 1920 · age 43
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 — Merrimack, New Hampshire
Open full size
1920 US Federal Census — Merrimack, New Hampshire
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1013unit:0230)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lillian E Blakey | 10 | Daughter | — | New Hampshire |
| 2 | Clarence W Blakey | 3 | Son | — | Vermont |
| 3 | Dorothy M Blakey | 1 | Daughter | — | Vermont |
| 4 | Albert J Mcclintock | 26 | Head | Fireman | Massachusetts |
| 5 | Marion B Mcclintock | 31 | Wife | — | Massachusetts |
| 6 | Barbara Mcclintock | 3 | Daughter | — | Massachusetts |
| 7 | Priscilla Mcclintock | 0 | Daughter | — | New Hampshire |
| 8 | John J Scully | 50 | Head | Granite Cutter | Ireland |
| 9 | Ellen G Scully | 48 | Wife | — | Vermont |
| 10 | Katherine E Scully | 23 | Daughter | Operator | Vermont |
| 11 | John D Scully | 21 | Son | Machinist | Vermont |
| 12 | Martha V Scully | 18 | Daughter | — | Vermont |
| 13 | Regis E Scully | 16 | Daughter | — | New Hampshire |
| 14 | Charles R Scully | 14 | Son | — | New Hampshire |
| 15 | E Constance Scully | 6 | Daughter | — | New Hampshire |
| 16 | William H Burnett | 31 | Head | Painter | Vermont |
| 17 | Katherine D Burnett | 29 | Wife | — | New Hampshire |
| 18 | Robert H Burnett | 8 | Son | — | New Hampshire |
| 19 | Elizabeth E Burnett | 6 | Daughter | — | New Hampshire |
| 20 | Jean L Burnett | 4 | Daughter | — | New Hampshire |
| 21 | Helen R Burnett | 3 | Daughter | — | New Hampshire |
| 22 | William J Cutting | 39 | Head | Driver | New Hampshire |
| 23 | Leda E Cutting | 37 | Wife | — | New Hampshire |
| 24 | Ralph W Bass | 35 | Head | Fireman | New Hampshire |
| 25 | Marie E Bass | 35 | Wife | — | New Hampshire |
| 26 | Harold B Bass | 14 | Son | — | New Hampshire |
| 27 | Donald M Bass | 12 | Son | — | New Hampshire |
| 28 | Timothy M Carey | 37 | Head | Dispatcher | New Hampshire |
| 29 | Laura M Carey | 31 | Wife | — | New Hampshire |
| 30 | Laura Carey | 9 | Daughter | — | New Hampshire |
| 31 | Timothy M Carey | 8 | Son | — | New Hampshire |
| 32 | Antonio Galletti | 60 | Head | — | Switzerland |
| 33 | Lena M Galletti | 32 | Daughter | Operator | Massachusetts |
| 34 | John Galletti | 26 | Son | Mail Carrier | New Hampshire |
| 35 | Victor F Galletti | 23 | Son | — | New Hampshire |
| 36 | Charles H Mead | 39 | Head | Manager | New Hampshire |
| 37 | Saddi H Mead | 41 | Wife | — | New Hampshire |
| 38 | Raymond F Mead | 13 | Son | — | New Hampshire |
| 39 | Maria Cahill | 68 | Head | — | Ireland |
| 40 | John F Cahill | 43 | Son | Commercial | New Hampshire |
| 41 | Mary C Cahill THIS PERSON | 32 | Daughter | Stenographer | New Hampshire |
| 42 | John A Riley | 65 | Head | Machinist | Ireland |
| 43 | Bridget A Riley | 62 | Wife | — | Ireland |
| 44 | Thomas E Riley | 30 | Son | Brakeman | New Hampshire |
| 45 | Mary E Riley | 34 | Daughter | Bookkeeper | New Hampshire |
| 46 | Irene C Riley | 21 | Daughter | Operator | New Hampshire |
| 47 | Daniel B Craigie | 64 | Head | Stone Cutter | Vermont |
| 48 | Martha A Craigie | 60 | Wife | — | New Hampshire |
| 49 | William Craigie | 29 | Son | Laborer | New Hampshire |
| 50 | Edwin R Craigie | 27 | Son | Laborer | New Hampshire |
Related Census Records
Pedigree Summary
Mary + 1 sibling
Gen 1 · 3 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)