The author of the family chronicle "Series familiae Werdumanae" (1667) and books on the history of East Frisia.
[1] Born on 1 January 1632 in the family castle of Edenserloog [de; nl] in Werdum, East Frisia.
[4] Von Werdum gave descriptions of many cities and villages of Ukraine, provided interesting data on the historical geography of the Kholmshchyna region, Halychyna, and Podillia, on the diplomacy of John III Sobieski, and his relations with Hetman Petro Doroshenko and the Tatars during the autumn campaign of 1671.
In his memoirs and diary, published in 1877 by K. Liske, Ulrich von Werdum also touched upon interfaith relations in Ukraine, characterizing the spiritual foundations of Catholicism and Orthodoxy.
[2] In 1679, he entered the service of Princess Christine Charlotte of Württemberg of East Frisia, who appointed him her privy counselor and vice president of the House, a position he held for a short time, as he died on 20 March 1681 at his birthplace.