u ▁after ▁the ▁Battle ▁of ▁Se k ig ah ara . ▁His ▁child hood ▁name ▁was ▁Sen ' y um aru ▁( 千 <0xE7> <0x86> <0x8A> 丸 ). ▁ ▁Mor ich ika ▁was ▁the ▁fourth ▁son ▁of ▁Ch ō s ok abe ▁Mot och ika , ▁the ▁da im y ō ▁of ▁the ▁Ch os ok abe ▁family ▁and ▁v ass al ▁of ▁Toy ot omi ▁H ide y oshi . ▁As ▁r uler ▁of ▁T osa ▁Province ▁in ▁ 1 6 1 4 ▁he ▁joined ▁forces ▁with ▁the ▁Toy ot omi ▁to ▁defend ▁Os aka ▁Castle ▁against ▁the ▁Tok ug awa . ▁He ▁and ▁his ▁sons ▁were ▁be head ed ▁on ▁May ▁ 1 1 , ▁ 1 6 1 5 , ▁following ▁the ▁defeat ▁of ▁the ▁Toy ot omi ▁and ▁Ch os ok abe ▁forces ▁at ▁the ▁Battle ▁of ▁T enn ō ji . ▁ ▁Family ▁Father : ▁Ch ō s ok abe ▁Mot och ika ▁( 1 5 3 9 – 1 5 9 9 ) ▁Mother : ▁Lady ▁Mot och ika ▁( d . ▁ 1 5 8 3 ) ▁Old er ▁brother ▁: ▁Ch ō s ok abe ▁Nob uch ika ▁K ag awa ▁Ch ik ak azu ▁W ife : ▁D augh ter ▁of ▁Ch ō s ok abe ▁Nob uch ika ▁Children : ▁ ▁Ch ō s ok abe ▁Mor it aka ▁( d . ▁ 1 6 1 5 ) ▁ ▁Ch ō s ok abe ▁Mor is ada ▁( d . ▁ 1 6