Mrs. Fuzekos / Julius Fazekas
Susi (Susanna) Olah
Mrs. Szabo
Juliane Lipka

Leader of a gang of Hungarian women who would hire themselves out 
to other women -- for the purpose of husband-slaying (1914 - 1929).

   In 1909, when she was 40 years old, a nurse-midwife named Susi Olah 
   arrived in the small Hungarian village of Nagzrev and began a campaign 
   of poisoning. She claimed at least 100 victims. She built a reputation 
   for predicting the deaths of unwanted people. These included newborn 
   or handicapped children, invalids, elderly persons, and husbands whose 
   return from World War I was unwelcome. All were poisoned with arsenic 
   at the request of their kinsfolk, as were those who openly doubted 
   Olah's supernatural powers. When she was denounced anonymously in 1929, 
   she committed suicide. Three of her many women accomplices were 
   convicted and hanged. (The People's Almanac #2)

http://asylumeclectica.com/morbid/archives/morb1199.htm

http://www.apollo12.webfusion.co.uk/Crime/se3.html

http://www.crimelibrary.com/serial10/angels/2.htm