JC
James Connolly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this James Connolly across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Connolly |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Industry | S |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1929 |
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 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Caroline Connolly | Daughter | — | 21 | ~1919 |
| Harry Connolly | Head | — | 52 | ~1888 |
| Harry Connolly | Son | — | 27 | ~1913 |
| Aloysius Connolly | Son | — | 17 | ~1923 |
| William Connolly | Son | — | 14 | ~1926 |
| Michael Connolly | Son | — | 25 | ~1915 |
| Patrick Connolly | Son | — | 19 | ~1921 |
| Albert Connolly | Son | — | 21 | ~1919 |
| James Connolly | Son | — | 11 | ~1929 |
| Margaret Connolly | Spouse | — | 49 | ~1891 |
Census Appearances
1930
Baltimore, Maryland
Son, age 1
Baltimore, Maryland · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | James P. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 11
Baltimore-City-County, Maryland · implied b. ~1929 — 10 household members
| Surname | Connolly |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Industry | S |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Connolly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Connolly
Son · 1940 · age 11 · b. ~1929 · Maryland
★ You are viewing this record
Sibling
Caroline Connolly
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Aloysius Connolly
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Connolly
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Connolly
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Connolly
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Connolly
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Connolly
Sibling · 1940 · age 27
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
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01539-00655)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Ebling | 70 | wife | — | Tennessee |
| 2 | Eliza Albee | 48 | daughter | — | Pennsylvania |
| 3 | A. Elizabeth | 43 | daughter | — | Pennsylvania |
| 4 | Milton Lang | 40 | Head | Physician | Maryland |
| 5 | Lillian Lang | 38 | wife | — | Maryland |
| 6 | Harry Connolly | 52 | Head | President | Maryland |
| 7 | Margaret Connolly | 49 | wife | — | Maryland |
| 8 | Harry Connolly | 27 | son | Interne | Maryland |
| 9 | Michael Connolly | 25 | son | Clerk | Maryland |
| 10 | Albert Connolly | 21 | son | — | Maryland |
| 11 | Patrick Connolly | 19 | son | — | Maryland |
| 12 | Aloysius Connolly | 17 | son | — | Maryland |
| 13 | William Connolly | 14 | son | — | Maryland |
| 14 | James Connolly THIS PERSON | 11 | son | — | Maryland |
| 15 | Caroline Connolly | 21 | daughter | Clerk | Maryland |
| 16 | Frank E. Novak | 33 | Head | Sales Mgr | Illinois |
| 17 | Betty Novak | 29 | wife | — | Illinois |
| 18 | Betty J. Novak | 4 | daughter | — | Illinois |
| 19 | Charles Rufenacht | 44 | Head | Surgeon | Maryland |
| 20 | Louise Rufenacht | 43 | wife | — | Maryland |
| 21 | Dorothy Rufenacht | 15 | daughter | — | Maryland |
| 22 | C. William Schneider | 53 | Head | Printer | Maryland |
| 23 | Louise Schneider | 39 | wife | — | Maryland |
| 24 | Amelia Schneider | 7 | daughter | — | Maryland |
| 25 | C. William Jr. Schneider | 4 | son | — | Maryland |
| 26 | Amelia Schneider | 83 | mother | — | Maryland |
| 27 | Herman Feldman | 44 | Head | Banker | Maryland |
| 28 | Marjorie Feldman | 40 | wife | — | Maryland |
| 29 | Shirley Ann Feldman | 15 | daughter | — | Maryland |
| 30 | Hugh Bonnet | 48 | Head | Official | S. Carolina |
| 31 | Ann Bonnet | 40 | wife | — | Maryland |
| 32 | Hugh Bonnet | 18 | son | — | Tennessee |
| 33 | Ann Bonnet | 11 | daughter | — | Massachusetts |
| 34 | H. Horn Elgar | 42 | Head | Editor | Illinois |
| 35 | Mae E. Elgar | 40 | wife | — | Illinois |
| 36 | Patricia Elgar | 14 | daughter | — | Illinois |
| 37 | Nancy Mae Elgar | 7 | daughter | — | Maryland |
| 38 | Charles Mrs. Conkling | 34 | Head | — | Maryland |
| 39 | Owen Ann Conkling | 32 | partner | — | Maryland |
| 40 | Eleanor Mc Donald | 23 | partner | Social Service | Maryland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)