cloth. Only a priest may touch it. When the priest detects Nerthus's presence by the cart, the cart is drawn by heifers. Nerthus's cart is met with celebration and peacetime everywhere it goes, and during her procession no one goes to war and all iron objects are locked away. In time, after the goddess has had her fill of human company, the priest returns the cart to her "temple" and slaves ritually wash the goddess, her cart, and the cloth in a "secluded lake". According to Tacitus, the slaves are then immediately drowned in the lake. The majority of modern scholars identify Nerthus as a direct etymological precursor to the Old Norse deity Njörðr, attested over a thousand years later. However, Njörðr is attested as male, leading to many proposals regarding this apparent change, such as incest motifs described among the Vanir, a group of gods to which Njörðr belongs, in Old Norse sources. Matronae Collectives of three goddess known as matronae appear on numerous votive altars from the Roman province of Germania inferior, especially from Cologne, dating to the third and fourth centuries CE. The altars depict three women in non-Roman dress. About half of serving matronae altars can be identified as Germanic because of their bynames; other have Latin or Celtic bynames. The bynames are often connected to a place or ethnic group, but a number are associated with water, and many of them seem to indicate a giving and protecting nature. Despite their frequency in the archaeological record, the matronae receive no mention in any written source. The matronae may be connected to female deities attested in collectives from later times, such as the Norns, the disir and valkyries; Rudolf Simek suggests that a connection to the disir is most likely. The disir may be etymologically connected to minor Hindu deities known as dhisanās, who likewise appear in a group; this would give them an Indo-European origin. Since Jacob Grimm, scholars have sought to connect the disir with the found in the Old High German First Merseburg Charm and with a conjecturally corrected place name from Tacitus; however, these connections are contested. The disir share some functions with the Norns and valkyries, and the Nordic sources suggest a close association between the three groups of Norse minor female deities. Further connections of the matronae have been proposed: the Anglo-Saxon pagan festival of ("night of the mothers") mentioned