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Cognomen イバラキ (イバラキ ) , in the world, is an extremely rare family name. Much more prevalently, イバラキ is the forename as well as the last name.
Ibalak, Ibalaki, Ibarak, and Ibaraki
アツコ, イズミ, タクヤ, サトシ, チカコ, ヨシコ, ヨウコ, ヨシアキ, and タカアキ