It seems that this Katharina Maria van Jewers, described as "Marie Catharine van Jewers gehörte ... der holländischen Gemeinde Petersburgs", "geboren 1728" (https://www.digar.ee/arhiiv/nlib-digar:227979) is the same person as Catharina Maria van Jever(en), who was baptized in Moscow 1 December 1727 (Catharina Maria van Jever(en)).