▁the ▁name ▁" Ma astr icht ", ▁after ▁its ▁capital . ▁The ▁first ▁king , ▁William ▁I , ▁who ▁did ▁not ▁want ▁the ▁name ▁Lim bourg ▁to ▁be ▁lost , ▁given ▁its ▁high ▁status ▁of ▁being ▁an ▁ancient ▁Duch y , ▁ins isted ▁that ▁the ▁name ▁be ▁changed ▁to ▁the ▁" Pro v ince ▁of ▁Lim burg ". ▁ ▁When ▁both ▁the ▁Dutch - ▁and ▁the ▁French - spe aking ▁Catholic ▁regions ▁in ▁the ▁south ▁of ▁the ▁new ▁kingdom ▁split ▁away ▁from ▁the ▁mainly ▁Cal vin ist , ▁Dutch ▁north ▁in ▁the ▁Belg ian ▁Revolution ▁of ▁ 1 8 3 0 , ▁the ▁province ▁of ▁Lim burg ▁was ▁at ▁first ▁almost ▁entirely ▁under ▁Belg ian ▁rule , ▁and ▁the ▁status ▁of ▁both ▁Lim burg ▁and ▁Luxemb ourg ▁became ▁unclear . ▁Leopold ▁I ▁took ▁the ▁o ath ▁as ▁King ▁of ▁the ▁Bel gi ans ▁on ▁ 2 1 ▁July ▁ 1 8 3 1 . ▁During ▁the ▁" T en ▁days ▁campaign ", ▁ 2 – 1 2 ▁August ▁ 1 8 3 1 , ▁Dutch ▁arm ies ▁entered ▁Belg ium ▁and ▁took ▁control ▁of ▁several ▁cities , ▁including ▁Ant werp , ▁in ▁order ▁to ▁negoti ate ▁from ▁a ▁stronger ▁position . ▁Several ▁Belg ian ▁milit ias ▁and ▁arm ies ▁were ▁easily ▁defeated ▁including ▁the ▁Belg ian ▁Army ▁of ▁the ▁Me use ▁near ▁Hass elt , ▁on ▁ 8 ▁August . ▁A ▁French ▁army ▁entered ▁Belg ium ▁on ▁ 9 ▁August , ▁and ▁the ▁British ▁also ▁began ▁to ▁interven e , ▁while ▁the ▁Netherlands