JB
James Brennan — 1930 US Census Record
Model Tree available1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this James Brennan across the 1910, 1920 and 1930 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed), with identified parents Frances & Michael — first a son (b.~1906), then head of a 8-person household.
Age 24
b. ~1906
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Railway Express |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Chauffeur |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1906 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Mamie Brennan | Daughter | — | 42 | ~1888 |
| Michael Brennan | Head | — | 63 | ~1867 |
| Joseph Brennan | Son | — | 40 | ~1890 |
| Thomas Brennan | Son | — | 32 | ~1898 |
| James Brennan | Son | — | 24 | ~1906 |
| John Brennan | Son | — | 27 | ~1903 |
| George Brennan | Son | — | 30 | ~1900 |
| Frances Brennan | Spouse | — | 64 | ~1866 |
Census Appearances
1910
Philadelphia, Pennsylvania
Son, age 2
Philadelphia, Pennsylvania · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Son, age 13
Philadelphia, Pennsylvania · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Son, age 24
Philadelphia, Pennsylvania · implied b. ~1906 — 8 household members
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Chauffeur |
| Industry | Railway Express |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 James Brennan across 3 US Census years (1910, 1920 and 1930) in Philadelphia, Pennsylvania, using XGBoost record linkage. Identified parents: mother Frances Brennan (~0.92 confidence) and father Michael Brennan (~0.92 confidence) and father Samuel Brennan (~0.92 confidence) and mother Mary Brennan (~0.92 confidence) and mother Mabel Brennan (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Frances Brennan
b. ~1866
Source mother
● Household
· direct · ~0.92
Father
Michael Brennan
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Samuel Brennan
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Mary Brennan
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Mabel Brennan
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Brennan
Son · 1930 · age 24 · b. ~1906 · Pennsylvania
★ You are viewing this record
Sibling
John Brennan
Sibling · 1930 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Brennan
Sibling · 1930 · age 40
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Brennan
Sibling · 1930 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Brennan
Sibling · 1930 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mamie Brennan
Sibling · 1930 · age 42
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 — Philadelphia, Pennsylvania
Open full size
1930 US Federal Census — Philadelphia, Pennsylvania
Page Contents
48 people indexed on this census page (ia:1930:fifteenthcensus00reel2129:0534)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Maude M Lynch | 12 | Daughter | — | Pennsylvania |
| 52 | Clara E Lynch | 61 | Aunt | — | Pennsylvania |
| 53 | James A Jones | 75 | Head | — | Pennsylvania |
| 54 | Cecia E Jones | 61 | Wife | — | Pennsylvania |
| 55 | John E Gunther | 59 | Head | Mechanic | New York |
| 56 | Josephine Gunther | 58 | Wife | — | New York |
| 57 | Albert J Gunther | 30 | Son | Salesman | New York |
| 58 | Conrad M Gunther | 20 | Son | Tester | Pennsylvania |
| 59 | Conrad Gunther | 64 | Brother | — | New York |
| 60 | Charles Harner | 48 | Head | Tailor | Pennsylvania |
| 61 | May Harner | 48 | Wife | — | Pennsylvania |
| 62 | Mary Harner | 13 | Daughter | — | Pennsylvania |
| 63 | Mary Bainbridge | 65 | Head | — | Pennsylvania |
| 64 | George Browning | 53 | Head | Paper Hanger | Pennsylvania |
| 65 | Laura Browning | 55 | Wife | — | Pennsylvania |
| 66 | Fred T Kealon | 55 | Head | Superintendent | Pennsylvania |
| 67 | Emily D Kealon | 53 | Wife | — | Pennsylvania |
| 68 | Emily M Kealon | 27 | Daughter | Stenographer | New Jersey |
| 69 | Fred J Jr Kealon | 22 | Son | Engineer | Pennsylvania |
| 70 | Charles Griffinberg | 36 | Head | Salesman | Pennsylvania |
| 71 | Edith Griffinberg | 41 | Wife | — | Pennsylvania |
| 72 | John Griffinberg | 9 | Son | — | Pennsylvania |
| 73 | Howard H Heel | 61 | Head | Carpenter | New Jersey |
| 74 | Josephine E Heel | 63 | Wife | — | Pennsylvania |
| 75 | William A Koch | 55 | Head | Salesman | Pennsylvania |
| 76 | Laura Koch | 53 | Wife | — | Pennsylvania |
| 77 | Rose L Koch | 22 | Daughter | Stenographer | Pennsylvania |
| 78 | Josephine Van Dyke | 54 | Head | Dermatologist | Pennsylvania |
| 79 | Virginia Van Dyke | 40 | Sister | — | Pennsylvania |
| 80 | Michael J Brennan | 63 | Head | Clerk | Pennsylvania |
| 81 | Frances Brennan | 64 | Wife | — | Pennsylvania |
| 82 | Mamie Brennan | 42 | Daughter | — | Pennsylvania |
| 83 | Joseph Brennan | 40 | Son | Inspector | Pennsylvania |
| 84 | Thomas Brennan | 32 | Son | Electrician | Pennsylvania |
| 85 | George Brennan | 30 | Son | Electrician | Pennsylvania |
| 86 | John Brennan | 27 | Son | Laborer | Pennsylvania |
| 87 | James Brennan THIS PERSON | 24 | Son | Chauffeur | Pennsylvania |
| 88 | George Keown | 46 | Head | Dentist | Pennsylvania |
| 89 | Ruth Keown | 32 | Wife | — | Pennsylvania |
| 90 | George Jr Keown | 8 | Son | — | Pennsylvania |
| 91 | Sarah A Ward | 63 | Head | — | Pennsylvania |
| 92 | John D Ward | 33 | Son | Jeweler | New Jersey |
| 93 | Joseph M Ward | 23 | Son | Electrician | New Jersey |
| 94 | Thea U Snyder | 52 | Brother | — | Pennsylvania |
| 95 | Harry Meyer Mclea | 39 | Head | Gold Cutter | Pennsylvania |
| 96 | Dorothy Mclea | 17 | Daughter | — | Pennsylvania |
| 97 | Margaret Kane | 67 | Cousin | — | Pennsylvania |
| 98 | Margaret O'Donnell | 66 | Boarder | Dressmaker | Pennsylvania |
Pedigree Summary
James + 5 siblings
Gen 1 · 5 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)