AdelaideSchreiber's list "English and British Royal names from 1066" of 3 great name ideas: Melita - Josepha!

English and British Royal names from 1066

Comprehensive list of the names used (or possibly used) by Kings, Queens and their children since William the Conqueror. Names listed include the original names of spouses whose names were later anglicised, and the names of all the monarchs' grandchildren (including future monarchs). 

Melita

Franziska is a feminine name of German origin, serving as the female form of Franz (Francis). The name ultimately derives from Latin "Franciscus," meaning "Frenchman" or "free one." Franziska has been consistently popular in German-speaking countries, particularly Germany, Austria, and parts of Switzerland, where it's appreciated for its classic elegance and cultural roots. The name gained recognition through figures like Franziska von Hohenheim, a German noblewoman of the 18th century. While less common in English-speaking countries, Franziska offers an international alternative to Frances or Francesca. The name carries a sophisticated European flair with its distinctive consonant blend and melodic three-syllable structure. It provides the charming nickname options Franzi or Ziska, adding versatility to this culturally rich name.

Franziska

Josepha is less heard in this country than in other parts of the world, seen as a slightly awkward feminization a la Ricarda and Benjamina.  In the U.S., Josephine or Joanna is the more usual feminine form of Joseph, though you might consider Josepha if you want to break rank.