Nicholas mụrụ na Gatchina Obí na Gatchina ka Grand Duke Paul, na Grand Duchess Maria Feodorovna nke Russia (née Sophie Dorothea nke Württemberg). Ọnwa ise mgbe a mụsịrị ya, nne nne ya, Catherine Onye Ukwu, nwụrụ na nne na nna ya ghọrọ eze ukwu na eze nwanyị nke Russia. Ọ bụ nwanne nwoke nke Emperor Alexander nke Mbụ nke Russia, onye nọchiri ocheeze na 1801, na nke Grand Duke Constantine Pavlovich nke Russia. Riasanovsky na-ekwu na ọ bụ, "nwoke kachasị mma na Europe, kamakwa onye na-adọrọ adọrọ nke na-enwe mmasị na ụmụ nwanyị ma na-adịkarị mma na ụmụ nwoke".Na July 13, 1817, Nicholas lụrụ Princess Charlotte nke Prussia (1798-1860), onye mechara jiri aha Alexandra Feodorovna mgbe ọ gbanwere na Orthodoxy. Ndị nne na nna Charlotte bụ Frederick William III nke Prussia na Louise Frederick nke Prussia-Strecklenburg?
Obí Gatchina dị na Gatchina