Genealogist Ronald Willemse Ronald Willemse conducts research into families originating from the Ticino villages of Sonogno and Frasco. This content was published on March 18, 2009 - 14:40 Hear about the work of genealogist Ronald Willemse You can find an overview of ongoing debates with our journalists here . Please join us! If you want to start a conversation about a topic raised in this article or want to report factual errors, email us at english@swissinfo.ch.
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