| Notes |
- "United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M6PK-STY : 19 August 2017), Isaac Rosentreter in household of John Marshall, San Lorenzo, Santa Cruz, California, United States; citing enumeration district ED 89, sheet 482A, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,082.
- Living in San Lorenzo, Santa Cruz, California, USA in 1880
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