Bulan was the E-B405 was a king of the Khalyzians in Greater Dacia and a descendant of the House of Aba. He was converted to Judaism by Yitzhak Sangari in 740 and took the name Sabriel. Many of his Judaic Khalyzians were buried in Chelarevo when Maurot's Slovi began to expand. Bulan's descendants retreated to rule over the Khalyzians independently from Old Halychyna until 1084.

The Bulanid Judaic Kings of the Cozar People in Old Halychyna became a completely independent nation under their own line of rulers from the non-Jewish Ashina Khazar Khagans of Taurian-Khazaria. The known lineage of Bulanid Khagans of the Cozar People in Greater Halychina is:

Sabriel c.740

Obadiah

Hezekiah

Manasseh I

Hanukkah,

the brother of Obadiah; next (814-?)

Isaac, his son; afterwards (?-835)

his son Zebulun

then his son Moses-Menasseh

then his son Nisi

then his son Aaron I

then his son Menahem

then his son Benjamin

then his son Aaron II

Joseph 950s-960s

Their relative Khan-Tuvan Dyggvi eventually led his Polan portion of the Cozar People in secession as the Kiabar Jews of Kopyriv Kinets' who had split with the Kara-Khazars.

Bulan's people assisted in the restoration of Hungary before being hung out to dry.