Questionable etymological reconstruction of Haskell into Latin via the great Wiktionary (Victiōnārium).
- An English patronymic surname derived from the Old Norse given name Áskell.
- A Jewish surname derived from the equivalent of English Ezekiel.
Let’s go with #1, because #2 seems unlikely (even Ezekiel isn’t very common), and finding a cognate would most likely result in a boring Greek/Hebrew borrowing of Ezekiel (all the rage during post-classical periods especially – hellloo Ecclesiastical Latin).
Fun fact: Haskell was never a common given name and it died off in the 1930s: http://www.babynamewizard.com/voyager#prefix=haskell&sw=both&exact=true