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Mary Harrison — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Duval-County, Florida
Our Model Tree links this Mary Harrison across the 1920, 1930 and 1940 US Censuses in Duval-County, Florida (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 5-person household.
Age 46
b. ~1894
Female
Spouse
Born: S Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Duval-County, Florida |
| Surname | Harrison |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 46 |
| Marital Status | Married |
| Birthplace | S Carolina |
| 1935 Residence (City) | Jacksonville City |
| 1935 Residence (County) | Duval |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birthplace (normalized) | s carolina |
| Township / Ward | Jacksonville City |
| Est. Birth Year | ~1894 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ethel Harrison | Daughter | — | 19 | ~1921 |
| Robert Harrison | Head | — | 51 | ~1889 |
| Lenora Simmons | Other | — | 40 | ~1900 |
| Elijah Harrison | Son | — | 23 | ~1917 |
| Mary Harrison | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Duval, Florida
Head, age 26
Duval, Florida · implied b. ~1894 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrison |
| Given Name | Mattie |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 26 |
| Marital Status | Single |
| Birthplace | S. Carolina |
| Father's Birthplace | S. Carolina |
| Mother's Birthplace | S. Carolina |
| Occupation | Laundress |
| Industry | at Home |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birthplace (normalized) | s carolina |
1930
Duval, Florida
Head, age 37
Duval, Florida · implied b. ~1893 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrison |
| Given Name | Mattie |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 37 |
| Marital Status | Widowed |
| Birthplace | S. Carolina |
| Age at First Marriage | 15 |
| Father's Birthplace | S. Carolina |
| Mother's Birthplace | S. Carolina |
| Occupation | Laundress |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | $9 |
| Birthplace (normalized) | s carolina |
1940
Duval-County, Florida
Spouse, age 46
Duval-County, Florida · implied b. ~1894 — 5 household members
| Surname | Harrison |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 46 |
| Marital Status | Married |
| Birthplace | S Carolina |
| 1935 Residence (City) | Jacksonville City |
| 1935 Residence (County) | Duval |
| Class of Worker | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birthplace (normalized) | s carolina |
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 Harrison across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Harrison
Spouse · 1940 · age 46 · b. ~1894 · Florida
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Duval-County, Florida
Open full size
1940 US Federal Census — Duval-County, Florida
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00623-01125)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Carter | 21 | Son | Laborer | Florida |
| 2 | William B Carter | 11 | Son | — | Florida |
| 3 | Archie Mack | 53 | Head | Truck Driver | S Carolina |
| 4 | Jessie Mack | 50 | Wife | Laborer | Florida |
| 5 | Archie Jr Mack | 29 | Son | — | Florida |
| 6 | Beatrice Mack | 19 | Daughter | — | Florida |
| 7 | Gertrude Hill | 43 | Head | — | Georgia |
| 8 | Sarah Grant | 47 | Sister | Nurse | Georgia |
| 9 | Antoy Massey | 15 | Niece | — | Georgia |
| 10 | Neely M Massey | 13 | Niece | — | Georgia |
| 11 | Georgia Levy | 51 | Head | — | Florida |
| 12 | Ernest Levy | 25 | Son | Presser | Florida |
| 13 | Edgar Muldrow | 20 | Son | Mechanic | Georgia |
| 14 | Frances Muldrow | 28 | Daughter | Maid | Florida |
| 15 | Robert L Susie | 13 | Grandson | — | Florida |
| 16 | Georgia M Susie | 11 | Granddaughter | — | Florida |
| 17 | Robert L Jr Susie | 1 | Grandson | — | Florida |
| 18 | Henry Lloyd | 61 | Head | Laborer | Florida |
| 19 | Zelda Lloyd | 61 | Wife | — | S Carolina |
| 20 | Jeshina Tucker | 53 | Head | — | Florida |
| 21 | Arthur Brown | 53 | Lodger | — | Georgia |
| 22 | Alonzo Strong | 40 | Head | Iceman | Georgia |
| 23 | Semperfield Strong | 32 | Wife | — | Florida |
| 24 | Ellie John B Strong | 19 | Nephew | — | Florida |
| 25 | Theo A Strong | 16 | Niece | — | Florida |
| 26 | Robert Harrison | 51 | Head | Laborer | S Carolina |
| 27 | Mary Harrison THIS PERSON | 46 | Wife | — | S Carolina |
| 28 | Elijah Harrison | 23 | Son | Laborer | Florida |
| 29 | Ethel Harrison | 19 | Daughter | — | Florida |
| 30 | Lenora Simmons | 40 | Sister-in-law | — | S Carolina |
| 31 | William Haines | 46 | Head | Laborer | Florida |
| 32 | Mattie Haines | 38 | Wife | — | Georgia |
| 33 | Jessie J Haines | 19 | Son | Delivery | Georgia |
| 34 | Melvin Haines | 17 | Son | Delivery | Florida |
| 35 | William J Plowlock | 32 | Head | Embalmer | Florida |
| 36 | Dorothy Plowlock | 27 | Wife | Owner | Florida |
| 37 | William J Jr Plowlock | 1 | Son | — | Florida |
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)