ML
Mary Lyon — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Lyon across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 11-person household.
Age 51
b. ~1879
Female
Spouse
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Lyon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 17 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Domestic |
| Industry | Private Family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Domestic |
| Township / Ward | W Harris District |
| Est. Birth Year | ~1879 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lyon | Spouse | — | 51 | ~1879 |
| Herman Mitchell | Other | — | 30 | ~1900 |
| Lucille Lyon | Daughter | — | 22 | ~1908 |
| Lillian Lyon | Daughter | — | 27 | ~1903 |
| John Lyon | Son | — | 16 | ~1914 |
| Genevieve Lyon | Daughter | — | 12 | ~1918 |
| Frank Lyon | Head | — | 51 | ~1879 |
| Beatrice Lyon | Daughter | — | 31 | ~1899 |
| James Lyon | Son | — | 14 | ~1916 |
| Maxine Lyon | Daughter | — | 20 | ~1910 |
| Blanche Lyon | Daughter | — | 29 | ~1901 |
Census Appearances
1930
Baltimore, Maryland
Spouse, age 51
Baltimore, Maryland · implied b. ~1879 — 11 household members
| Surname | Lyon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 17 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Domestic |
| Industry | Private Family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 65
Baltimore-City-County, Maryland · implied b. ~1875 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lyons |
| Given Name | Mary G. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 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 Mary Lyon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lyon
Spouse · 1930 · age 51 · b. ~1879 · Maryland
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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:1930:15thcensus860unit:1103)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Blanche Jones | 26 | Daughter | Teacher | Maryland |
| 52 | Lillian Mitchell | 25 | Daughter | Tailor | Maryland |
| 53 | James Mitchell | 23 | Son | — | Maryland |
| 54 | Dillon Mitchell | 14 | Nephew | — | Maryland |
| 55 | William Quimby | 56 | Head | Laborer | Maryland |
| 56 | Emma Quimby | 19 | Daughter | Domestic | Maryland |
| 57 | Josephine Quimby | 13 | Daughter | — | Maryland |
| 58 | Julia Quimby | 11 | Son | — | Maryland |
| 59 | Melva Thomas | 41 | Cousin | Domestic | Maryland |
| 60 | Evelyn Thomas | 18 | Cousin | — | Maryland |
| 61 | Josephine Thomas | 15 | Cousin | — | Maryland |
| 62 | Irma Campbell | 46 | Cousin | Domestic | Maryland |
| 63 | Thelma Campbell | 22 | Cousin | Domestic | Maryland |
| 64 | Joseph Gross | 47 | Head | Chauffeur | Maryland |
| 65 | Marjorie Gross | 48 | Wife | — | Maryland |
| 66 | Charles Hall | 37 | Cousin | Sub Station | Maryland |
| 67 | Helen Hall | 35 | Cousin | — | Maryland |
| 68 | Dorothy Hall | 15 | Cousin | — | Maryland |
| 69 | Katie Gross | 20 | Sister | Domestic | Maryland |
| 70 | Helen Christie | 50 | Cousin | Domestic | Maryland |
| 71 | Rachel West | 51 | Cousin | Cook | Maryland |
| 72 | Emma Valentine | 54 | Head | Domestic | Maryland |
| 73 | Emma Mccormick | 51 | Sister | Domestic | Virginia |
| 74 | Sidney Mccormick | 39 | Cousin | Domestic | Virginia |
| 75 | Richard Bailey | 24 | Nephew | — | Maryland |
| 76 | Celestine Croxton | 35 | Cousin | Domestic | Maryland |
| 77 | Richard Croxton | 40 | Son | Laborer | Maryland |
| 78 | Roscoe Harvey | 40 | Roomer | Domestic | Maryland |
| 79 | Don Mccormick | 4 | Nephew | — | Washington D.C. |
| 80 | Bernard Mccormick | 3 | Nephew | — | Maryland |
| 81 | Gertrude Bailey | 3 | Niece | — | Maryland |
| 82 | Robert Bailey | 2 | Nephew | — | Maryland |
| 83 | Frank Lyon | 51 | Head | Porter | Maryland |
| 84 | Mary Lyon THIS PERSON | 51 | Wife | Domestic | Maryland |
| 85 | Beatrice Lyon | 31 | Daughter | Teacher | Maryland |
| 86 | Blanche Lyon | 29 | Daughter | — | Maryland |
| 87 | Lillian Lyon | 27 | Daughter | Clerk | Maryland |
| 88 | Lucille Lyon | 22 | Daughter | — | Maryland |
| 89 | Maxine Lyon | 20 | Daughter | Teacher | Maryland |
| 90 | John Lyon | 16 | Son | — | Maryland |
| 91 | James Lyon | 14 | Son | — | Maryland |
| 92 | Genevieve Lyon | 12 | Daughter | — | Maryland |
| 93 | Herman Mitchell | 30 | Roomer | Porter | Maryland |
| 94 | Frank Allen | 42 | Head | Mechanic | Georgia |
| 95 | Margaret Allen | 42 | Wife | — | Maryland |
| 96 | Lillian Jackson | 52 | Sister | Domestic | Maryland |
| 97 | Charles Sutton | 39 | Head | Laborer | North Carolina |
| 98 | Birdie Sutton | 25 | Wife | — | Virginia |
| 99 | Jasper Davis | 23 | Roomer | Chauffeur | Virginia |
| 100 | Louise Davis | 21 | Roomer | Domestic | Virginia |
Related Census Records
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)