For this Fiona Theresa there are 8 different names on Yasni.
In the ranking of the most common first names Fiona Theresa is on position 4583.
Female first name (German, English, Scottish): Fiona, the blonde, Old Irish (Word format); fionn = white, bright, blond, for the first time used as a given name in the works of James Macpherson (18th century), information on masculine form Finn; anglizierte form of the Irish name 'Fionn', Fionn mac Cumhail is the hero of a famous Irish legend
Female first name (English, German): Theresa, the huntress, ancient Greek (Geographic name as first name), there = the animal that hunted animal, origin not known, perhaps, to 'There' (huntable animal) and thus with (?) meaning 'hunter', 'Therasia' is the name of a small island next to Thera or Santorini, the name is so often interpreted as 'Woman of the island Therasia'