Mikołaj Abramowicz

In subsequent conflicts with Sweden, he fought in the failed 1625 campaign, capturing the bridge crossing at Daugava, and particularly distinguished himself as a regimental commander during the 1626–29 war, in the Battle of Vistula.

As one of the last Protestant leaders in the predominantly Catholic region, he granted his Lutsk mansion to the Lithuanian Calvinist synod for use as an evangelical school.

Returning to military service, Abramowicz served in the 1633–34 Smolensk War and, holding the rank of colonel, was one of the negotiators in the June 1634 Treaty of Polyanovka, which ended the conflict.

In 1638 King Władysław IV Vasa nominated him as Cześnik Wielki Litewski (Great Grand Duke's Cup-Bearer of Lithuania).

In view of Abramowicz's prominent activity in the Lithuanian Calvinist synod at a time of increased Counter-Reformation in the Commonwealth, his ability to retain high offices, was taken as sign of King Władysław's faith in his leadership.