progenitress

“Their oldest literature shows how large a part the serpent played in the so-called divine age, how it acted as progenitress of the Mikado's ancestry, and how it afforded means of incarnation for the kami or gods.”

The Religions of Japan From the Dawn of History to the Era of Méiji

“The Margaret O'Carroll already mentioned, a descendant and progenitress of illustrious women, rode privately to Trim, as we are told, with some English prisoners, taken by her husband,”

A Popular History of Ireland : from the Earliest Period to the Emancipation of the Catholics — Volume 1