In recent years, studies on women's history have gained significant momentum. However, accessing archival sources regarding women, who constitute a fundamental element of history, still poses various challenges. While the male population paying taxes and performing military service was recorded alongside their patronymics in Ottoman archival documents, registering women was generally deemed unnecessary by Ottoman officials. Consequently, the women who managed to leave their mark on history were usually members of the elite class, such as the wives of sultans, princes, viziers, and beys. Their inclusion in cadastral surveys (tahrir) occurred predominantly through the endowment foundations (waqf) they established or the registration of their properties. The primary source of this study, the rum waqf register (rum evkaf defteri), is registered under number 388 (new number 583) in the Archive of the General Directorate of Land Registry and Cadastre in Ankara. Beginning with the monogram of Sultan Murad III, the register dates back to 1576 and consists of 143 folios containing numerous inserts and marginal notes. In the 16th century, the center of the Rum Eyalet was Sivas, and this significant register encompasses prominent districts like Merzifon, Amasya, Tokat, and Samsun. The intense concentration of waqf records can be explained by Çelebi Mehmed granting state land (mîrî) as private property during the interregnum to seize the throne. The most frequently encountered female name in the register is Ayşe. Prominent among them is Ayşe Hatun, the daughter of Mahmud Çelebi and granddaughter of Mehmed Çelebi, whose name appears in 17 instances alongside her patronym. Following Ayşe Hatun, the most recorded names are Melike Hatun and Sitti Şah Hatun. For some women, their husbands or fathers are explicitly stated; for instance, Bülbül Hatun is identified as the mother of Şehzade Murad. The register contains a total of 190 distinct female names, including Alemşah Hatun, Anber Hatun, and Benefşe Hatun. Consequently, investigating female names in archival documents will significantly contribute to illuminating numerous genealogical lineages and historical personalities.