Brief passage from a long article:
“. . . Mara Danilovic Savkaric, aged thirty-six, married, living at Erdevic, and charged with having by the same means poisoned her husband and another man, . . . “
[“Ten Husband Poisoners. - Wives Who Sent Their Partners to Death With Fly Paper.” Syndicated (Vienna Cor. London Telegraph), St. Paul Sunday Globe (Mn.), Nov. 9, 1890, p. 1]
The full text can be found in the entry on Makrena Stankovic
For links to other cases of woman who murdered 2 or more husbands (or paramours), see Black Widow Serial Killers.