WM
William Muller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this William Muller across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Muller |
| Given Name | William P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Assistant |
| Industry | High school |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Assistant |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1919 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Muller | Son | — | 21 | ~1919 |
| Mary Muller | Daughter | — | 19 | ~1921 |
| Catherine Muller | Spouse | — | 54 | ~1886 |
| Phillip Muller | Head | — | 55 | ~1885 |
Census Appearances
1930
Baltimore, Maryland
Son, age 10
Baltimore, Maryland · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Miller |
| Given Name | William P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| 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
Son, age 21
Baltimore-City-County, Maryland · implied b. ~1919 — 4 household members
| Surname | Muller |
| Given Name | William P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Assistant |
| Industry | High school |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 400 |
| Highest Grade | Hs 4 |
| 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 William Muller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Muller
Son · 1940 · age 21 · b. ~1919 · Maryland
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Sibling
Mary Muller
Sibling · 1940 · age 19
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
38 people indexed on this census page (nara:1940:m-t0627-01533-00035)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William F. Burness | 6 | Son | — | Maryland |
| 42 | James C. Baum | 56 | Head | Accountant | Maryland |
| 43 | Margaret C. Baum | 56 | Wife | — | Maryland |
| 44 | Phillip A. Muller | 55 | Head | Patrolman | Maryland |
| 45 | Catherine M. Muller | 54 | Wife | — | Maryland |
| 46 | William P. Muller THIS PERSON | 21 | Son | Assistant | Maryland |
| 47 | Mary Muller | 19 | Daughter | Saleslady | Maryland |
| 48 | Harry Kraft | 32 | Head | Bus Operator | Maryland |
| 49 | Myrtle Kraft | 31 | Wife | — | Maryland |
| 50 | William Kraft | 10 | Son | — | Maryland |
| 51 | Janette Kraft | 7 | Daughter | — | Maryland |
| 52 | Warren J. Fox | 52 | Head | Accountant | Maryland |
| 53 | Emma B. Fox | 45 | Wife | — | Illinois |
| 54 | Eleanora M. Fox | 19 | Daughter | — | Maryland |
| 55 | Hilda F. Emory | 44 | Head | Stenographer | Maryland |
| 56 | Hilda G. Emory | 8 | Daughter | — | Maryland |
| 57 | John P. Metzger | 46 | Head | Maintenance Man | Maryland |
| 58 | Estelle L. Metzger | 37 | Wife | Upholstery | Pennsylvania |
| 59 | Frank L. Pfaff | 40 | Head | Bookbinder | Maryland |
| 60 | Loretta C. Pfaff | 42 | Wife | — | Maryland |
| 61 | Denis Mccormack | 39 | Head | Unit Foreman | New York |
| 62 | Charlotte Mccormack | 39 | Wife | Weaver | Maryland |
| 63 | Janis Stauermagel | 16 | Daughter | — | Maryland |
| 64 | Charles W. Schmidt | 48 | Head | Filesetter | Maryland |
| 65 | Anna Schmidt | 45 | Wife | — | Maryland |
| 66 | Charles E. Schmidt | 23 | Son | Butcher | Maryland |
| 67 | Hedwig Schmidt | 21 | Daughter | — | Maryland |
| 68 | J. Paul Medford | 46 | Head | Bookkeeper | Maryland |
| 69 | Mary C. Medford | 54 | Wife | Machine Operator | Maryland |
| 70 | Paul Martini | 24 | Head | Machinist | New York |
| 71 | Minnie E. Martini | 21 | Wife | — | Maryland |
| 72 | Thomas Glanville | 63 | Head | Guard | Maryland |
| 73 | Thomas Jr. Glanville | 34 | Son | Ice Salesman | Maryland |
| 74 | Irene E. Davis | 55 | Head | Seamstress | Virginia |
| 75 | Curtis Robinson | 28 | Son | Assemblyman | Virginia |
| 76 | Ruby Robinson | 15 | Daughter | — | Maryland |
| 77 | Edna Robinson | 13 | Daughter | — | Maryland |
| 78 | Franklin Groom | 32 | Son | Postal Clerk | Virginia |
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)