Lithuanian Crusade
They first conquered other neighboring Baltic tribes – Curonians , Semigallians , Latgalians , Selonians , Old Prussians ( see Livonian Crusade and Prussian Crusade ) . 
<triplet> Livonian Crusade <subj> Curonians <obj> participant <subj> Semigallians <obj> participant <subj> Latgalians <obj> participant <subj> Selonians <obj> participant <triplet> Prussian Crusade <subj> Old Prussians <obj> participant