Johna is a unique, unisex given name of uncertain origin. It has been used sparingly throughout history, often as an alternative spelling to Johanna, Jane, or John. The name's meaning and popularity have varied greatly across different cultures and eras.
"The name Johna experienced significant popularity spikes in the mid-20th century, particularly between 1946 and 1961, with a peak of 98 births in 1963. However, its usage has steadily declined since, with fewer than 20 births per year recorded from 1991 onwards."