I know 2 Lennys, both female. One is short for Lenora, the other is just Lenny.
― Anonymous User 12/8/2020
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Hurricane Lenny was the twelfth tropical storm, eighth hurricane, and record-breaking fifth Category 4 hurricane in the 1999 Atlantic hurricane season. It is the second-strongest November Atlantic hurricane on record, behind the 1932 Cuba hurricane.
Lenny and Lennie are pretty rare as given names in Sweden, and I've NEVER heard of it being used as a nickname for Lena! There are only a handful of women in Sweden who are named Lenny or Lennie. A Lennart is often called "Lelle" and a Magdalena is often called Malena, Magda or Lena, but normally, there aren't any nicknames for Lena. [noted -ed]
Lenny is actually a popular name for women/girls in this part of the world where I live (Borneo) and I personally know 2 women named "Lenny" both of whom are great gals.