 In the east , Selvo not only maintained good trade relations with the Byzantine Empire , but also married into their royal family to consolidate the alliance that had existed for many years between the two nations . In 1075 , Selvo married Teodora Ducas , daughter of Constantine X and sister of the reigning emperor , Michael VII . Though Venetians , especially the nobles , were wary of the pageantry that accompanied the marriage and the royal bride , the strengthened alliance meant even greater mobility for Venetian merchants in the east . Though the popularity of the new dogaressa was not great , Selvo was the hero of the merchant class that had had even greater political sway since the depositions of the Orseoli . 
