, ▁and ▁Um berto ▁later ▁married ▁Princess ▁Marg her ita ▁of ▁Sav oy . ▁There ▁were ▁also ▁planned ▁for ▁Eugen ia ▁to ▁marry ▁then ▁Prince ▁Ludwig ▁of ▁Bav aria , ▁the ▁nep hew ▁of ▁King ▁Otto ▁of ▁Greece , ▁and ▁have ▁him ▁convert ▁to ▁Eastern ▁Orth odox y ▁to ▁re ass ure ▁the ▁Greek ▁people , ▁but ▁the ▁plans ▁came ▁too ▁late ▁to ▁help ▁King ▁Otto . ▁ ▁On ▁ 1 9 ▁January ▁ 1 8 6 8 ▁at ▁the ▁Winter ▁Palace , ▁Eugen ia ▁married ▁Duke ▁Alexander ▁Pet rov ich ▁of ▁Old enburg , ▁a ▁son ▁of ▁Duke ▁Peter ▁Georg iev ich ▁of ▁Old enburg . ▁Alexander ' s ▁grand father ▁had ▁married ▁Grand ▁Duch ess ▁Catherine ▁Pav lov na , ▁daughter ▁of ▁Paul ▁I ▁of ▁Russia , ▁and ▁their ▁descend ants ▁had ▁been ▁raised ▁in ▁Russia ▁ever ▁since ▁and ▁become ▁completely ▁" Russ ian ized ", ▁much ▁like ▁Eugen ia ' s ▁own ▁family . ▁Thus ▁despite ▁his ▁German ▁title , ▁Duke ▁Alexander , ▁like ▁his ▁father ▁before ▁him , ▁had ▁grown ▁up ▁entirely ▁in ▁Russia , ▁serving ▁his ▁military ▁service ▁for ▁the ▁cz ars . ▁He ▁was ▁always ▁considered ▁a ▁part ▁of ▁the ▁Russian ▁imperial ▁family . ▁ ▁The ▁couple ▁had ▁one ▁son , ▁Duke ▁Peter ▁Alexand rov ich ▁of ▁Old enburg ▁( 2 1 ▁November ▁ 1 8 6 8 ▁– ▁ 1 1 ▁March ▁ 1 9 2 4 ). ▁Eugen ia ▁had ▁a ▁long - standing ▁friendship ▁with ▁Em press ▁Maria ▁Fe odor ov na , ▁and