Same or similar meaning – [name_f]Atara[/name_f], [name_f]Amira[/name_f], Armelle, [name_f]Maelie[/name_f], [name_f]Almira[/name_f]/[name_f]Elmira[/name_f], [name_f]Erlinda[/name_f], [name_f]Vasilia[/name_f], [name_u]Reagan[/name_u], [name_f]Regina[/name_f], [name_f]Raina[/name_f]/[name_f]Rayna[/name_f], [name_f]Sarine[/name_f], [name_f]Shiri[/name_f], Surelle, [name_f]Zadie[/name_f], [name_f]Sharee[/name_f], Sharelle
A double-barrel version would be nice and prevent the issue of having the same ending sound as [name_f]Fiona[/name_f]. For example: [name_f]Sarah[/name_f]-[name_u]Lee[/name_u], [name_f]Sarah[/name_f]-[name_f]Jane[/name_f], [name_f]Sarah[/name_f]-[name_f]Beth[/name_f], [name_f]Sarah[/name_f]-[name_f]May[/name_f]. You could also go this direction with [name_f]Sally[/name_f]-[name_f]Jane[/name_f], [name_f]Sally[/name_f]-[name_f]May[/name_f], [name_f]Sally[/name_f]-[name_f]Ann[/name_f], etc.
Since [name_f]Sarah[/name_f] means “princess,” you could also use a princess’s name from history (maybe one from your family’s country of origin OR the country of origin for your mother-in-law’s ancestors). Here’s a nice list of historical princess names sorted by country: Baby Names Inspired by Real Princesses – SheKnows. These are some of my favorites as a MN for [name_f]Fiona[/name_f]: [name_f]Grace[/name_f], [name_f]Margaret[/name_f], [name_f]Beatrice[/name_f], [name_f]Anne[/name_f], [name_f]Salome[/name_f], [name_f]Kate[/name_f]/[name_f]Katherine[/name_f]/[name_f]Catherine[/name_f], [name_f]Rachel[/name_f], [name_f]Meghan[/name_f], [name_f]Alice[/name_f], [name_f]Charlotte[/name_f], [name_f]Adelheid[/name_f], [name_f]Charlene[/name_f], [name_f]Caroline[/name_f], [name_f]Victoria[/name_f], [name_f]Anastasia[/name_f], [name_f]Adelaide[/name_f], [name_f]Alexandra[/name_f], [name_f]Amelia[/name_f], [name_f]Audrey[/name_f], [name_f]Cassandra[/name_f], [name_f]Cleo[/name_f], [name_f]Cressida[/name_f], [name_f]Eluned[/name_f], [name_f]Yasmin[/name_f], [name_f]Winifred[/name_f], [name_f]Antionette[/name_f], [name_f]Blanche[/name_f], [name_f]Cecilia[/name_f], [name_f]Cecily[/name_f], [name_f]Charlotte[/name_f], [name_f]Constance[/name_f], [name_f]Eleanor[/name_f], [name_f]Agnes[/name_f], [name_f]Eugenie[/name_f], [name_f]Lucienne[/name_f], [name_f]Renee[/name_f], [name_f]Marguerite[/name_f], [name_f]Madeleine[/name_f], [name_f]Melanie[/name_f], [name_f]Gabriella[/name_f], [name_f]Helen[/name_f], [name_f]Mabel[/name_f].
From famous fairytales, literature, film, old legends… [name_f]Isolde[/name_f], [name_f]Leia[/name_f], [name_f]Stephanie[/name_f], [name_f]Aurora[/name_f], [name_u]Ariel[/name_u], [name_f]Elsa[/name_f], [name_f]Snow[/name_f], [name_f]Giselle[/name_f], [name_f]Jasmine[/name_f], [name_f]Belle[/name_f], [name_f]Grainne[/name_f], [name_f]Ella[/name_f], [name_f]Merida[/name_f] – actually, [name_f]Fiona[/name_f] is the princess name from Shrek! There’s a long list of fictional princesses from literature, theatre, film, etc. here - List of fictional princesses - Wikipedia. Perhaps one of those stories or characters resonates with you.