Osmanies (Premysloides Dynasty)

History
Osmanies was first non-Roman and non-Greek family, which was able to swing up among imperial oligarchy, mostly because Ertuğrul Osmanies role in Liberation of Constantinople and his late commerce ambitions.

Ertuğrul Osmanies
Ertuğrul Osmanies (anachronic surname) was among Seljuk military officers and nobles supporting Yahya al-Gabal. After fall of Constantinople in 1249, Ertuğrul figure out that Yahya al-Gabal is incompetent leader and Mongol revenge will be merciless.

Ertuğrul prevented Turkish troops from raiding Imperial Palace of Constantinople and sent messages to Hulegu Khan with various vital informations about capabilities and forces of Yahya al-Gabal, which secured him amnesty for his participation on Yahya betrayal.

Hulegu Khan later revealed to Romanos V, that Turks wanted to destroy Imperial Palace of Constantinople, but Ertuğrul saved palace from plundering. Romanos wanted to met with Ertuğrul, but he find out that Ertuğrul is missing with most of his troops and for next few years, until 1261, Ertuğrul was de facto forgotten in Empire.

Ertuğrul returned during Great Crusade, when was revealed he became merchant in Asia Minor and in Smyrna. Ertuğrul gifted thousands Hyperpyrons for Imperial Military, include food supplies and medicine, to help in this Great Crusade.

Ertuğrul revealed he left Islam and joined Orthodox Christianity and became loyal citizen of Roman Empire. In 1265, when war ended and situation improved, Emperor Romanos appointed Ertuğrul to position of Smyrna governor, as Ertuğrul participated to various extents in Smyrna commerce, disputes and politics since 1250. In 1267, Ertuğrul was appointed as "Archont of Islands" and so became also supreme state official on all islands near Smyrna.

In 1280, Ertuğrul Osmanias died in sleep and his son Osman, became head of Osmanies family, but unlike his father, Osman was ambitious and capable merchant in Asia Minor and Jerusalem.

Osman Osmanias
From Osman first name was formed name of his Ertuğrul dynasty, but Ertuğrul himself is also called as Osmanias in historical documents.