ical ▁nature ▁show ▁that ▁Bulg ars ▁belonged ▁to ▁the ▁group ▁of ▁Turk ic ▁pe op les . ▁ ▁Et ym ology ▁B . ▁Zh iv kov ▁emphas ized ▁that ▁D ulo ▁and ▁N ush ib i ▁were ▁trib al ▁conf eder ations , ▁and ▁not ▁r uling ▁dynast ies . ▁B . ▁S ime on ov ▁derived ▁D ulu ▁from ▁Turk ic ▁d ul / t ul ▁( big , ▁powerful , ▁giant ; ▁war ▁horse ), ▁and ▁saw ▁D ulo ▁as ▁partly ▁S lav ic ized ▁form . ▁The ▁* D ull u ▁S ime on ov ▁derived ▁from ▁Old ▁H unn ic ▁d ul ▁+ ▁lu ▁( mount ed , ▁hors eman ). ▁According ▁to ▁P . ▁B . ▁Golden ▁no ▁such ▁H unn ic ▁word ▁is ▁att ested . ▁According ▁to ▁G . ▁Cla us on , ▁Old ▁Turk ic ▁t ul ▁denotes ▁" wid ow , ▁wid ower ". ▁All ▁theories ▁P . ▁B . ▁Golden ▁cons iders ▁for ▁now ▁as ▁spec ulative . ▁ ▁Leg acy ▁ ▁D ulo ▁Hill ▁on ▁Living ston ▁Island , ▁near ▁Ant arct ica , ▁is ▁named ▁after ▁the ▁Bulgar ian ▁r uling ▁dynast y ▁D ulo . ▁ ▁References ▁ ▁Notes ▁ ▁S ources ▁▁▁▁▁▁▁▁▁▁ ▁* <0x0A> </s> ▁With ▁a ▁height ▁of ▁, ▁M ader as ▁is ▁the ▁smaller ▁of ▁the ▁two ▁vol cano es ▁which ▁make ▁up ▁the ▁island ▁of ▁O met e pe , ▁situated ▁in ▁Lake ▁Nic ar agua ▁in ▁Nic ar agua , ▁Central ▁America . ▁ ▁Un