▁that ▁of ▁the ▁last ▁N gu y ễ n ▁dynast y . ▁C iv ili ans ▁also ▁adopted ▁the ▁name ▁during ▁the ▁Tr ị n h – N gu y ễ n ▁Civil ▁War ▁for ▁purposes ▁of ▁social ▁clim bing , ▁having ▁migr ated ▁from ▁the ▁north ▁to ▁the ▁south . ▁Even ▁the ▁T â y ▁S ơ n ▁Brothers ▁changed ▁their ▁name ▁to ▁" N gu y ễ n " ▁from ▁" H ồ ." ▁ ▁Notable ▁people ▁ ▁Since ▁approximately ▁ 4 0 ▁percent ▁of ▁all ▁Vietnam ese ▁people ▁have ▁the ▁surname ▁N gu y ễ n , ▁notable ▁people ▁with ▁this ▁surname ▁run ▁the ▁gam ut ▁of ▁Vietnam ese ▁society . ▁They ▁range ▁from ▁heads ▁of ▁state ▁( N gu y ễ n ▁l ords , ▁T â y ▁S ơ n ▁dynast y ▁, ▁N gu y ễ n ▁D ynast y , ▁N gu y ễ n ▁V ă n ▁Th i ệ u , ▁N gu y ễ n ▁Min h ▁Tri ế t ▁, ▁ ▁N gu y ễ n ▁Ph ú ▁Tr ọ ng ▁, ▁N gu y ễ n ▁X í ), ▁po ets ▁( N gu y ễ n ▁Tr ã i , ▁N gu y ễ n ▁Du , ▁N gu y ễ n ▁ Đ ì n h ▁Chi ể u ), ▁Catholic ▁cl erg ymen ▁( N gu y ễ n ▁V ă n ▁Th u ậ n ), ▁writers ▁( V iet ▁Th anh ▁N gu yen ), ▁scient