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Conrad Porta (1541–1585) was a Lutheran pastor of Mansfeld, and author of theologian tracts of the first generation following Martin Luther.
His most notable work is the Jungfrawen-Spiegel ("Mirror of Virgins", so called after the medieval Speculum Virginum) of 1580 which he wrote on the request of the widowed Margareta von Mansfeld-Hinterort, duchess of Braunschweig-Lüneburg (1534–1596).
References
M. J. Haemig and Robert Kolb, "Preaching in Lutheran Pulpits in the Age of Confessionalization" in Kolb (ed.), Lutheran Ecclesiastical Culture: 1550–1675 (2008), p. 143.