 Complete the following phrase:  Despite the age difference, the marriage was happy. The couple traveled together, even when Barbara was late in her pregcy. Their first daughter Hedwig was born on 15 March 1513 in Poznań. After two months, Sigismund and Barbara departed towards Vilnius to attend to the renewed war with the Grand Duchy of Moscow. The two-month-old Hedwig was sent to Kraków. The couple separated for the first time in JulySeptember 1514 when Sigismund organized the army against Moscow. Sigismund returned to his wife in Vilnius after the victory in the 