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受姓始祖 : 垂公为放勋共工而国于共以国为氏后改共为洪氏.
始祖: 洪宗翰字文长(宋)
台湾始迁祖 : 各支各派均有其迁台始祖约数10人于明末清初迁台.
散居地 : 台湾省南投县彰化县台中县台南县等地.
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