This *must* be the misspelling of Leokadia. From the Greek Leokades. However, I found two varying meanings/derivations: 1. from the words leos-people, and kados-care. 2. leukas - light, clear
Its about the 130th most frequent among the Polish population today. It's familiar, but *very* old-fashioned, not in a good way. Nicknames Loda, Lodzia (pr. Lodzha). There was a St. Leocadia of Toledo in the 3rd century, a martyr.