The family represented a branch of the Vitztum von Straubing[1] and held the hereditary rank of chief chamberlain in the Duchy of Bavaria.
Haymeran was in the service of Emperor Ferdinand I and served the imperial family as a field captain in Italy.
[6] The marriage of Haymeran and Rosina produced at least three daughters,[7] including Beatrix von Rain († 1538), and a son, Hans Joachim von Rain zu Sommeregg, who was married to Catharina Auwetia from Auburg.
Since Hans Joachim, as heir to his uncle Christoph II Rainer zu Rain, moved the center of his rule back to Bavaria in 1548,[8] he sold Sommeregg and the Töplitsch district in 1550 to Christoph Khevenhüller von Aichelberg.
Shortly after Hans Joachim von Rain's return home, the entire family died out.