ư ơ ng ▁and ▁a ▁part ▁of ▁H ai ph ong ▁today ▁there ▁is ▁the ▁district ▁of ▁the ▁Ph í ▁family ▁( V ietnam ese : ▁h uy ệ n ▁Ph í ▁Gia ). ▁At ▁the ▁end ▁of ▁the ▁L ý ▁and ▁the ▁Tr ầ n ▁D ynast y ▁there ▁were ▁many ▁people ▁who ▁had ▁changed ▁their ▁names ▁to ▁" N gu y ễ n " ▁and ▁" N gu y ễ n ▁Ph í ." ▁By ▁the ▁L ê ▁D ynast y , ▁the ▁court ▁changed ▁the ▁name ▁of ▁the ▁district ▁to ▁" K im ▁Th àn h ." ▁ ▁When ▁the ▁M ạ c ▁D ynast y ▁fell ▁in ▁ 1 5 9 2 , ▁their ▁descend ants ▁changed ▁their ▁family ▁name ▁to ▁" N gu y ễ n ." ▁ ▁Tr ầ n ▁Qu ang ▁Di ệ u ▁( like ▁his ▁wife ▁B ù i ▁Th ị ▁X u ân ) ▁worked ▁as ▁a ▁major ▁officer ▁of ▁the ▁T â y ▁S ơ n ▁D ynast y , ▁against ▁N gu y ễ n ▁Á n h . ▁After ▁the ▁T â y ▁S ơ n ▁was ▁defeated , ▁his ▁children ▁adopted ▁various ▁names ▁( one ▁of ▁them ▁" N gu y ễ n ") ▁to ▁fle e ▁ret ali ation . ▁ ▁In ▁Vietnam ▁and ▁many ▁Asian ▁countries , ▁the ▁r ul ers ▁may ▁let ▁their ▁cour ti ers ▁share ▁their ▁family ▁name ▁as ▁a ▁reward ▁for ▁their ▁loyal ty . ▁Many ▁officials ▁thereby ▁changed ▁their ▁name ▁to ▁match