MB
Margaret Brennan — 1920 US Census Record
Model Tree available1920 United States Federal Census · New Castle, Delaware
Our Model Tree links this Margaret Brennan across the 1900, 1910 and 1920 US Censuses in New Castle, Delaware (XGBoost, ~Confirmed), with identified parents William & Margaret — first a daughter (b.~1901), then head of a 5-person household.
Age 19
b. ~1901
Female
Daughter
Born: Delaware
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | New Castle, Delaware |
| Surname | Brennan |
| Given Name | Margaret J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | Hockessin Village |
| Est. Birth Year | ~1901 |
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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Helen Brennan | Daughter | — | 17 | ~1903 |
| Adina Brennan | Daughter | — | 17 | ~1903 |
| Margaret Brennan | Spouse | — | 52 | ~1868 |
| Margaret Brennan | Daughter | — | 19 | ~1901 |
| William Brennan | Head | — | 60 | ~1860 |
Census Appearances
1900
New Castle, …
Daughter, age 1
New Castle, Delaware · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Delaware |
| Birth Month | Nov |
| Birth Year | 1899 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1910
New Castle, …
Daughter, age 10
New Castle, Delaware · implied b. ~1900 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Margaret G |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1920
New Castle, …
Daughter, age 19
New Castle, Delaware · implied b. ~1901 — 5 household members
| Surname | Brennan |
| Given Name | Margaret J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 Brennan across 3 US Census years (1900, 1910 and 1920) in New Castle, Delaware, using XGBoost record linkage. Identified parents: father William Brennan (~0.92 confidence) and mother Margaret Brennan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Brennan
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Margaret Brennan
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Brennan
Daughter · 1920 · age 19 · b. ~1901 · Delaware
★ You are viewing this record
Sibling
Adina Brennan
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Brennan
Sibling · 1920 · age 17
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 — New Castle, Delaware
Open full size
1920 US Federal Census — New Castle, Delaware
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu203unit:0958)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William H Chambers | 50 | Head | Farming | Delaware |
| 2 | Lana A Chambers | 47 | Wife | — | Delaware |
| 3 | Mildred C Chambers | 10 | Daughter | — | Maryland |
| 4 | Frank D Dennison | 39 | Head | Farming | Delaware |
| 5 | Mary V Dennison | 40 | Wife | — | Delaware |
| 6 | Howard D Dennison | 12 | Son | — | Delaware |
| 7 | Mildred D Dennison | 8 | Daughter | — | Delaware |
| 8 | Verna M Dennison | 2 | Daughter | — | Delaware |
| 9 | Andrew Mico | 52 | Laborer | Laborer | Austria Hungary |
| 10 | Hester Craig | 46 | Head | Laborer | New York |
| 11 | Bessie Craig | 24 | Sister | — | Delaware |
| 12 | Herbert Craig | 16 | Nephew | — | Delaware |
| 13 | William Dicky | 27 | Boarder | Laborer | Virginia |
| 14 | Edna Ricks | 17 | Boarder | — | Pennsylvania |
| 15 | Andrew Macklem | 51 | Head | Laborer | Delaware |
| 16 | Lillie Macklem | 48 | Wife | — | Delaware |
| 17 | William Brennan | 60 | Head | Farming | Ireland |
| 18 | Margaret Brennan | 52 | Wife | — | Ireland |
| 19 | Margaret J Brennan THIS PERSON | 19 | Daughter | — | Delaware |
| 20 | Adina J Brennan | 17 | Daughter | — | Delaware |
| 21 | Helen M Brennan | 17 | Daughter | — | Delaware |
| 22 | Jerry Donahue | 51 | Head | Farming | Ireland |
| 23 | Mary Donahue | 47 | Wife | — | Delaware |
| 24 | Joseph Donahue | 16 | Son | — | Delaware |
| 25 | Leon Donahue | 15 | Son | — | Delaware |
| 26 | John Donahue | 12 | Son | — | Delaware |
| 27 | Annie Passmore | 43 | Sister in law | — | Delaware |
| 28 | Samuel Garrett | 69 | Head | — | Pennsylvania |
| 29 | Margaret H Garrett | 71 | Wife | — | Delaware |
| 30 | Mark Chadwick | 57 | Head | — | Delaware |
| 31 | Mary E Chadwick | 56 | Wife | Laborer | Delaware |
| 32 | Cornelius Garretson | 37 | Head | — | Pennsylvania |
| 33 | Katherine Garretson | 37 | Wife | Manager | Pennsylvania |
| 34 | Cornelius D Garretson | 13 | Son | — | Pennsylvania |
| 35 | Mary Garretson | 10 | Daughter | — | Pennsylvania |
| 36 | James H Reynolds | 51 | Head | — | Delaware |
| 37 | Mary L Reynolds | 52 | Wife | Farming | Delaware |
| 38 | Clarence Jones | 15 | Nephew | — | Pennsylvania |
| 39 | Russell Reynolds | 25 | Head | Laborer | Delaware |
| 40 | Nellie R Reynolds | 23 | Wife | Farming | Delaware |
| 41 | James H Reynolds | 4 | Son | — | Delaware |
| 42 | Mary M Reynolds | 2 | Daughter | — | Delaware |
| 43 | Mathew P Roses | 47 | Head | — | Delaware |
| 44 | Marie Roses | 46 | Wife | Farming | Delaware |
| 45 | Anna Roses | 18 | Daughter | — | Delaware |
| 46 | Margaret Roses | 17 | Daughter | — | Delaware |
| 47 | Marie Roses | 15 | Daughter | Telephone Operator | Delaware |
| 48 | Richard Roses | 12 | Son | — | Delaware |
| 49 | Lilly Roses | 10 | Daughter | — | Delaware |
| 50 | Albert Roses | 6 | Son | — | Delaware |
Related Census Records
Pedigree Summary
Margaret + 2 siblings
Gen 1 · 2 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)