Etymology: Derived from the Japanese words 'ita' (板 or 畝), meaning 'board' or 'ridge of a field', and 'no' (野), meaning 'field' or 'plain'. In some cases, it may come from 'ita' (板) meaning 'wood/plank' combined with 'no' (野), though the agricultural interpretation is more common. The name likely originated as a toponymic surname for someone living near a distinctive field or wooden structure in a field.