From Chapter LV. I think we did briefly touch on this at one point:

The unquestionable evidence of language attests the descent of the Bulgarians from the original stock of the Sclavonian, or more properly Slavonian, race; (7) and the kindred bands of Servians, Bosnians, Rascians, Croatians, Walachians, (8) &c., followed either the standard or the example of the leading tribe. From the Euxine to the Adriatic, in the state of captives, or subjects, or allies, or enemies, of the Greek empire, they overspread the land; and the national appellation of the SLAVES (9) has been degraded by chance or malice from the signification of glory to that of servitude. (10)

Footnote 9:
Jordan subscribes to the well-known and probable derivation from Slava, laus, gloria, a word of familiar use in the different dialects and parts of speech, and which forms the termination of the most illustrious names, (de Originibus Sclavicis, pars. i. p. 40, pars. iv. p. 101, 102)

Footnote 10:
This conversion of a national into an appellative name appears to have arisen in the viiith century, in the Oriental France, where the princes and bishops were rich in Sclavonian captives, not of the Bohemian, (exclaims Jordan,) but of Sorabian race. From thence the word was extended to the general use, to the modern languages, and even to the style of the last Byzantines, (see the Greek and Latin Glossaries and Ducange.) The confusion of the "**", or Servians, with the Latin Servi, was still more fortunate and familiar, (Constant. Porphyr. de Administrando, Imperio, c. 32, p. 99.)


The ** is in the online edition of "The History of the Decline and Fall of the Roman Empire" (http://www.ccel.org/g/gibbon/decline/volume2/chap55.htm#Bulgarians)and represents Sigma epsilon rho beta lambda omicron iota.

Bingley

Bingley