MA
Margaret Alexander — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Margaret Alexander across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 7-person household.
Age 7
b. ~1923
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Alexander |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1923 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Mary Alexander | Spouse | — | 45 | ~1885 |
| William Alexander | Son | — | 5 | ~1925 |
| George Alexander | Head | — | 45 | ~1885 |
| George Alexander | Son | — | 13 | ~1917 |
| Mary Alexander | Daughter | — | 12 | ~1918 |
| Margaret Alexander | Daughter | — | 7 | ~1923 |
| John Alexander | Son | — | 16 | ~1914 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 7
Baltimore, Maryland · implied b. ~1923 — 7 household members
| Surname | Alexander |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 16
Baltimore-City-County, Maryland · implied b. ~1924 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore, city |
| 1935 Residence (County) | Baltimore, city |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Margaret Alexander across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Alexander
Daughter · 1930 · age 7 · b. ~1923 · Maryland
★ You are viewing this record
Sibling
Mary Alexander
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Alexander
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Alexander
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Alexander
Sibling · 1930 · age 5
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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus861unit:0472)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louis Linehart | 60 | Head | Dressmaker | Maryland |
| 2 | Lucinda Linehart | 58 | Wife | — | Pennsylvania |
| 3 | Alice M Linehart | 32 | Daughter | Photographer | Maryland |
| 4 | William Borgelt | 74 | Head | Mail Clerk | Virginia |
| 5 | Julia M Borgelt | 74 | Wife | — | Virginia |
| 6 | Julia M Borgelt | 45 | Daughter | — | Maryland |
| 7 | Hilda L Matteo | 43 | Daughter | — | Maryland |
| 8 | Raymond Matteo | 13 | Grandson | — | Maryland |
| 9 | Grace M Borgelt | 41 | Daughter | — | Virginia |
| 10 | John Sweeney | 33 | Head | Salesman | Maryland |
| 11 | Gertrude C Sweeney | 32 | Wife | — | Maryland |
| 12 | John J Sweeney | 5 | Son | — | Maryland |
| 13 | Joseph Sweeney | 2 | Son | — | Maryland |
| 14 | James Owens | 58 | Head | — | Maryland |
| 15 | Elizabeth Owens | 58 | Wife | — | Maryland |
| 16 | James Owens | 25 | Son | — | Maryland |
| 17 | Margaret Campbell | 18 | Boarder | — | Maryland |
| 18 | Mary Campbell | 17 | Boarder | — | Maryland |
| 19 | James Campbell | 15 | Boarder | — | Maryland |
| 20 | George C Alexander | 45 | Head | Fireman | Maryland |
| 21 | Mary E Alexander | 45 | Wife | — | Maryland |
| 22 | John Alexander | 16 | Son | Clerk | Maryland |
| 23 | George Alexander | 13 | Son | — | Maryland |
| 24 | Mary Alexander | 12 | Daughter | — | Maryland |
| 25 | Margaret Alexander THIS PERSON | 7 | Daughter | — | Maryland |
| 26 | William Alexander | 5 | Son | — | Maryland |
| 27 | Arthur Mcneill | 31 | Head | Salesman | Maryland |
| 28 | Emma M Mcneill | 28 | Wife | — | North Carolina |
| 29 | Doris Mcneill | 8 | Son | — | Maryland |
| 30 | Arthur Mcneill | 5 | Son | — | Maryland |
| 31 | George F Duhling | 24 | Head | Maintenance | Maryland |
| 32 | Sarah L Duhling | 22 | Wife | Saleslady | Virginia |
| 33 | Edward G Duhling | 3 | Son | — | Maryland |
| 34 | Isaac Adams | 37 | Head | Maintenance | Canada English |
| 35 | Grace V Adams | 35 | Wife | — | Virginia |
| 36 | Dorothy Adams | 17 | Daughter | Operator | Maryland |
| 37 | Isaac Adams | 15 | Son | — | Maryland |
| 38 | John Adams | 12 | Son | — | Maryland |
| 39 | William Adams | 11 | Son | — | Maryland |
| 40 | Robert Adams | 9 | Son | — | Maryland |
| 41 | Richard Adams | 7 | Son | — | Maryland |
| 42 | Louis H Queen | 55 | Head | Office Clerk | Maryland |
| 43 | Mary E Queen | 47 | Wife | — | Maryland |
| 44 | Louis J Queen | 24 | Son | — | Maryland |
| 45 | Michael Queen | 52 | Brother | — | Maryland |
| 46 | Mary Queen | 48 | Sister | Saleswoman | Maryland |
| 47 | Nellie Gardner | 35 | Boarder | Clerk | Maryland |
| 48 | William Marshall | 50 | Head | Electrician | Maryland |
| 49 | Kate H Marshall | 45 | Wife | — | Maryland |
| 50 | William Marshall | 13 | Son | — | Maryland |
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)