Several genealogical databases are now publicly available on the Web. The information stored in such databases is not only of interest for genealogical research but might also be used in broader historical studies. As a case study, this paper aims to explore what a crowdsourced genealogical online database can tell about income inequality in Denmark during the First World War.,The analysis is based on 55,000 family-level records on the payment of local income taxes in a major Danish provincial town (Esbjerg) from a publicly available database on the website of The Esbjerg City Archives combined with official statistics from Statistics Denmark.,Denmark saw a sharp increase in income inequality during the First World War. The analysis shows that the new riches during the First World War in a harbour city such as Esbjerg were not “goulash barons” or stock-market speculators but fishermen. There were no fishermen in the top 1per cent of the income distribution in 1913. In 1917, more than 37 per cent of the family heads in this part of the income distribution were fishermen.,The paper illustrates how large-scale microdata from publicly available genealogical Web databases might be used to gain new insights into broader historical issues.

中文翻译：

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挖掘档案族谱数据库，以获得对更广泛历史问题的新见解

现在，几个家谱数据库可以在Web上公开获得。这样的数据库中存储的信息不仅是家谱研究感兴趣的，而且还可以用于更广泛的历史研究中。作为案例研究，本文旨在探讨众包的族谱在线数据库可以揭示一战期间丹麦的收入不平等情况。该分析基于55,000个家庭级别的主要地方缴纳地方所得税的记录丹麦埃斯比约市档案馆网站上的公共数据库与丹麦统计局的官方统计数据相结合，丹麦省级城镇（埃斯比约）在第一次世界大战期间，丹麦的收入不平等现象急剧增加。分析表明，第一次世界大战期间在诸如埃斯比约这样的港口城市中的新财富不是“炖牛肉男爵”或股市投机者，而是渔民。1913年收入分配的前1％中没有渔民。在1917年，收入分配的这一部分中，有超过37％的户主是渔民。族谱网络数据库可用于获得对更广泛历史问题的新见解。