P.S.

by: George Hall Reid (ed. I've transposed the last paragraph to first, for clarity)

The Seljuk Turks were originally Guzzis from the Aral Sea area (cf. Khwarismians) forming a large family like the Normans. In 1050 their senior general Tughrul took over Ispahan as capital of a state Persia / Khorassan. In 1055 he took over Baghdad as Sultan, and his cousins raided deep into Cappadocia. He died in 1063, and his nephew Alp Arslan took over.

After the battle of Manzikert 1071, the Seljuk Sultan Alp Arslan held the Byzantine Emperor to ransom, but released him after part payment had been made. Alp then turned east, presumably to recruit, by force where necessary. On reaching Khwarism, he had to fight the local horde under Emir Yusef, whom he captured. Yusef behaved arrogantly, so Alp Arslan ordered him to be staked out and left to die. Yusef drew a dagger and mortally wounded Alp, tho' he himself was slain by the Sultan's guards.

The emperor Romanus Diogenes, on his return to Constantinople, was imprisoned and blinded so brutally that he died. Other emperors came and went until Alexius Comnenus took over 1081.