The Proeger Family · Generation 5 — Earl's great-great-grandparents and their siblings
John Marcos Fonseca
Probable husband of Louise Elizabeth Rose · born 1882
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Person · John Marcos Fonseca
The record
- HHomethe fan · what changed · open questions
- MMigrationbirths and deaths on a map, by decade
- TTimeline815 entries · 5 eras
- PPeople362 people, by generationJohn Marcos Fonseca
- LLines13 surname pages
The evidence
The findings
How to read this record
Every claim is tagged
Most family trees flatten everything into the same confident typeface. This one does not. The three research tags below are the whole point of the exercise: they say what a document proves, what the weight of evidence suggests, and what nobody has found yet. A fourth marks what the family stated directly, where no document has been retrieved at all — it is kept separate on purpose and is never quietly promoted to confirmed. A fifth, added on 13 September 2026, marks biological evidence: a DNA result is not a document, and it is not testimony either. Two further labels mark where this page withholds information rather than lacking it.
Attested by a document that was actually retrieved and read — a census sheet, a government index, a grave marker, a family-written obituary.
Strongly supported but not nailed down: a user-contributed tree, a masked index field, or a chain of consistent circumstances. Believable, not proven.
Searched for and not located. This is a statement about the search, not about the person — the record may well exist somewhere unsearched.
Supplied by the family and recorded on their word — no document has been retrieved for it. Note the diamond rather than the dot: this is provenance, not proof, and it stands apart from the three record tags above S24.
Biological evidence consistent with a claim. It corroborates origins; it does not by itself establish a person or a link. Note the bar rather than a dot or a diamond: no DNA result on this page is ever counted as confirmed, because no document was read for it S46.
The person is living. By the privacy rule for this page, name and relationship are shown, and at most a year the family has already published. Full dates of birth, ages, places of residence and record identifiers are held back.
A branch that is actively being worked on. The node exists in the structure so the shape of the family is honest; the detail is simply not in yet.
John Marcos Fonseca
ProbableProbable husband of Louise Elizabeth Rose · born 1882
- Born
- on 1 June 1882
- Sources
- 6
Research status
Evidence: The index of his First World War draft registration at Highline, Imperial County, names his wife as Louise Rose Fonseca; the Alameda County marriage index has John M. Fonseca and Louisa Rosa on 30 May 1907; an Imperial County voter roll lists Mrs. Louise Rose Fonseca next to John M. Fonseca. Weak or missing: No record read names Louise's parents, so that his wife is this Louise, daughter of Antone Rose, rests on her name, age and California birth; the draft card is read from its index only; his parents and his death are not found. Not yet confirmed. Know more? Confirm or correct this →
Life in the order the records give it
Open questions what is probable, weak or missing — confirm or correct it
John Marcos Fonseca · Sources
Citations
Sources cited on this card
6 of the record's sources are cited here. The numbering is the record's own; the full list, with where else each is cited, is at Sources.
- S1538Alameda County, California, Index to Marriage Licenses and Certificates No. 12, letter F, Book 39, p. 314 — John M. Fonseca and Louisa Rosa, 30 May 1907. Ancestry, “California, U.S., Marriage Records from Select Counties, 1850–1941”, record 2124680. Image examined in the Stage 2 reading, 25 September 2026. Probable John M. Fonseca and Louisa Rosa, licence and certificate indexed at Book 39, page 314, 30 May 1907. ⚠ An index only: no age, birthplace or parents, and Rosa is a common name. The certificate itself (Book 39, p. 314) would settle it.
- S15391910 census — South San Francisco, First Township, San Mateo County, California, ED 49, sheet 12B, lines 82–85 — John Fonseca household. Ancestry, “1910 United States Federal Census”, record 178435552. Image examined in the Stage 2 reading, 25 September 2026. Probable John Fonseca, 28, a packing-house laborer born in Portugal; his wife Louise, 24, born in California of Portuguese parents, married three years, mother of two children, both living; daughters Mildred and Matilda; Railroad Avenue. ⚠ No Rose surname or parents on the page; the link to Louise Rose rests on the 1907 marriage index.
- S15401920 census — Holtville Township, Meloland Precinct, Imperial County, California, ED 22, sheet 3A, dwelling 54, family 64, lines 24–29 — John Fonseca household. Ancestry, “1920 United States Federal Census”, record 2900482. Image examined in the Stage 2 reading, 25 September 2026. Probable John Fonseca, a dairy farmer born in the Azores, on a rented dairy farm; his wife Louise, 34, born in California to Azores-born parents; Mildred, 11, Matilda, 10, Irene, 9, and Lawrence, 7; January 1920. ⚠ No Rose surname on the page.
- S1541Imperial County, California, Great Register, Lavender Precinct, entries 52–53 (year not on the page; indexed 1920–1926) — Louise Rose Fonseca and John M. Fonseca. Ancestry, “California, U.S., Voter Registrations, 1900–1968”, record 11640247. Image examined in the Stage 2 reading, 25 September 2026. Probable Mrs. Louise Rose Fonseca, housewife, Republican, of Route B, Brawley, listed next to John M. Fonseca, dairyman. ⚠ No age, birthplace or parents, and the year is not on the page.
- S15421930 census — Rialto City, Rialto Township, San Bernardino County, California, ED 36-72, sheet 7A, lines 36–43 — John Fonseca household, Arrow Route. Ancestry, “1930 United States Federal Census”, record 91876736. Image examined in the Stage 2 reading, 25 September 2026. Probable John Fonseca, 47, a poultry-packing laborer born in the Azores; his wife Louise, 44, born in California to Azores-born parents, first married at 22; and their children Mildred, Irene, Laura, Frank, Lucille and Albert (the youngest named only). ⚠ No Rose surname on the page.
- S1636First World War draft registration card, 1917–18 — John Marcos Fonseca, Highline, Imperial County, California. Ancestry record 20461431 (a second index entry for the same card, 20461684). Read from the index only; the card image is not yet read. Born 1 June 1882; spouse “Louise Rose Fonseca”. No parent is named.
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