ian ▁language . ▁ ▁End onym ▁ ▁The ▁eth nic ▁name ▁Alban ian ▁was ▁used ▁by ▁By z antine ▁and ▁Latin ▁sources ▁in ▁the ▁forms ▁ar b - ▁and ▁alb - ▁since ▁at ▁least ▁the ▁ 2 nd ▁century ▁A . D , ▁and ▁eventually ▁in ▁Old ▁Alban ian ▁texts ▁as ▁an ▁end onym . ▁It ▁was ▁later ▁replaced ▁in ▁Alban ia ▁proper ▁by ▁the ▁term ▁Sh q ipt ar , ▁a ▁change ▁most ▁likely ▁trig ged ▁by ▁the ▁Ott oman ▁con quest s ▁of ▁the ▁B alk ans ▁during ▁the ▁ 1 5 th ▁century . ▁However , ▁the ▁ancient ▁att est ation ▁of ▁the ▁eth nic ▁design ation ▁is ▁not ▁considered ▁a ▁strong ▁evidence ▁of ▁an ▁Alban ian ▁continu ity ▁in ▁the ▁Il ly rian ▁region , ▁since ▁there ▁are ▁many ▁examples ▁in ▁history ▁of ▁an ▁eth nic ▁name ▁sh ifting ▁from ▁one ▁eth nos ▁to ▁another . ▁ ▁There ▁are ▁various ▁theories ▁of ▁the ▁origin ▁of ▁the ▁word ▁sh q ipt ar : ▁▁ ▁A ▁theory ▁by ▁Ludwig ▁Th all ó czy , ▁Milan ▁Š uff lay ▁and ▁Konst antin ▁J ire č ek , ▁which ▁is ▁today ▁considered ▁ob sole te , ▁derived ▁the ▁name ▁from ▁a ▁D riv ast ine ▁family ▁name ▁recorded ▁in ▁varying ▁forms ▁during ▁the ▁ 1 4 th ▁century : ▁Sch ep uder ▁( 1 3 6 8 ), ▁Sc ap uder ▁( 1 3 7 0 ), ▁Sch ip ud ar , ▁Sch ib ud ar ▁( 1 3 7 2 ), ▁Sch