Magdalena Wernhof (Werdenhof)

Church census lists maiden name as Smolow. Daughter Karolina's marriage record lists her maiden name as Bukiewicz. Son Vincent's birth record lists her maiden name as Abakanowicz, a Polish Szlachta surname. Daughter Magdalena's marriage record lists her maiden name as Abuniewicz, a different Szlachta surname.

I'm assuming Jurgis was not married to multiple Magdalena's, and that there is just confusion over her maiden name.