MH
Margaret Hayes — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Margaret Hayes across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 10-person household.
Age 18
b. ~1922
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Hayes |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | new worker |
| Class of Worker | PW |
| Hours Worked | 15 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | New Worker |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1922 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| James Hayes | Son | — | 9 | ~1931 |
| Mary Hayes | Daughter | — | 3 | ~1937 |
| William Hayes | Son | — | 11 | ~1929 |
| John Hayes | Son | — | 16 | ~1924 |
| Margaret Hayes | Daughter | — | 18 | ~1922 |
| Cecilia Hayes | Daughter | — | 20 | ~1920 |
| Joseph Hayes | Son | — | 13 | ~1927 |
| John Hayes | Head | — | 48 | ~1892 |
| Helen Hayes | Daughter | — | 19 | ~1921 |
| Theresa Hayes | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 8
Baltimore, Maryland · implied b. ~1922 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayes |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Northern Ireland |
| Mother's Birthplace | Northern Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 18
Baltimore-City-County, Maryland · implied b. ~1922 — 10 household members
| Surname | Hayes |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | new worker |
| Class of Worker | PW |
| Hours Worked | 15 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 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 Hayes across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Hayes
Daughter · 1940 · age 18 · b. ~1922 · Maryland
★ You are viewing this record
Sibling
Mary Hayes
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hayes
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Hayes
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Hayes
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Hayes
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecilia Hayes
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Hayes
Sibling · 1940 · age 13
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-t0627-01534-00018)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Henry Schmidt | 6 | nephew | — | Maryland |
| 42 | William Kelley | 53 | Head | Sheet Metal Worker | Maryland |
| 43 | Josephine Kelley | 49 | Wife | — | Maryland |
| 44 | Herman Rock | 49 | Head | Real Estate | Maryland |
| 45 | Matilda Rock | 53 | Sister | — | Maryland |
| 46 | Minnie Rock | 51 | Sister | — | Maryland |
| 47 | Margaret Steinford | 46 | Head | — | Maryland |
| 48 | Mary Weishman | 14 | Daughter | New Worker | Maryland |
| 49 | Gerald Weishman | 12 | Son | — | Maryland |
| 50 | Charles Steinford | 3 | Son | — | Maryland |
| 51 | Robert Burke | 25 | Head | Waiter | Maryland |
| 52 | Edna Burke | 22 | Wife | — | Maryland |
| 53 | Robert Burke | 2 | Son | — | Maryland |
| 54 | Charles Burke | 1 | Son | — | Maryland |
| 55 | Russell V. Knight | 29 | Head | Machine Hand | West Virginia |
| 56 | Florence Knight | 24 | Wife | — | Maryland |
| 57 | Russell Knight | 5 | Son | — | Maryland |
| 58 | Jeanette G. Knight | 3 | Daughter | — | Maryland |
| 59 | Donald Knight | 0 | Son | — | Maryland |
| 60 | Margaret Riddell | 63 | Head | — | Maryland |
| 61 | Oscar Riddell | 25 | Son | Helper | Maryland |
| 62 | Gustav Riddell | 27 | Son | Laborer | Maryland |
| 63 | Richard Riddell | 12 | Grandson | Machine Hand | Maryland |
| 64 | George Riddell | 32 | Son | Oven Stripper | Maryland |
| 65 | Mildred Riddell | 27 | Daughter-in-law | — | Maryland |
| 66 | Mary Grason | 35 | Daughter | Cake Packer | Maryland |
| 67 | John Hayes | 48 | Head | Chauffeur | Maryland |
| 68 | Theresa Hayes | 43 | Wife | — | Maryland |
| 69 | Cecilia Hayes | 20 | Daughter | Examiner | Maryland |
| 70 | Helen Hayes | 19 | Daughter | Ironing | Maryland |
| 71 | Margaret Hayes THIS PERSON | 18 | Daughter | New Worker | Maryland |
| 72 | John Hayes | 16 | Son | New Worker | Maryland |
| 73 | Joseph Hayes | 13 | Son | — | Maryland |
| 74 | William Hayes | 11 | Son | — | Maryland |
| 75 | James Hayes | 9 | Son | — | Maryland |
| 76 | Mary Teresa Hayes | 3 | Daughter | — | Maryland |
| 77 | William Deyberer | 48 | Head | Seamstress | Lithuania |
| 78 | Mary Deyberer | 46 | Wife | — | Lithuania |
| 79 | Lillian Deyberer | 20 | Daughter | Seamstress | Maryland |
| 80 | Adella Deyberer | 19 | Daughter | Seamstress | 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)