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Leonis Adobe, built in 1844, is one of the oldest surviving private residences in Los Angeles County and one of the oldest surviving buildings in the San Fernando Valley. Located in what is now Calabasas, California, the adobe was occupied by the wealthy rancher, Miguel Leonis, until his death in 1889. Following Leonis’ death, the property was the subject of a legal dispute between his common law wife, heirs, and a daughter born out of wedlock; the dispute lasted more than 15 years in the courts.