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The widow Maria Ygnacio Lopez de Carrillo arrives in the Sonoma County area with her children (different sources state there were 9 or 12) at the bequest of her son-in-law General Mariano Guadalupe Vallejo.
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While there was already an adobe structure on the property used by the Franciscans as a chapel, it is unclear what condition it was in when General Vallejo purchased the property. the Carrillo Adobe
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The Carrillo Adobe was the first non-Native
American home in what became Santa Rosa.
Source: Eric Stanley thesis. -
In 1937, the current owner of the property - farmer Paul Hahman - was using the Adobe as an out building. When the Press Democrat newspaper announced the Carrillo Adobe's centennial anniversary and people flocked to see it. But Hahman posted a sign that read, "no adobe visitors". The PD pushed for restoration, but there was only a brief spark of interest that faded away.