After the death of his father, his mother remarried to Christoph Baron von Teuffenbach (1545–1598) and from this marriage he had one half-brother, Baron Friedrich von Teuffenbach-Mayrhofen (1585–1621), one of the leaders of the Protestant uprising in Moravia; executed in Innsbruck, 1621.

As Wolff only had one younger sister, Baroness Johanna Eleonore Galler von Schwamberg (1582–1649), he was the sole male heir of his uncle, Ruprecht von Eggenberg.

Like his uncle, Wolff von Eggenberg chose a military career and received the command of Imperial Forces as General-Obrist (imperfect translation is Colonel-General) on the border to Croatia.

His uncle, Ruprecht von Eggenberg had mandated in his testament that only male, Catholic members of the family who had attained the rank of general or higher may be buried in his family mausoleum in Ehrenhausen.

As Wolfgang had fulfilled the criteria, he was interred beside his uncle in the family mausoleum.