What would you choose as a middle name for [name_f]Tess[/name_f]?
[name_f]Tess[/name_f] [name_f]Eleanora[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Annabella[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Juniper[/name_f] (although this might sound better as [name_f]Juniper[/name_f] Tess)
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Margaret[/name_f]
[name_f]Tess[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Lucille[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Francesca[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Delilah[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Annemarie[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Imogen[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Wilhelmina[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Rosemarie[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Marina[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Octavia[/name_f]
[name_f]Tess[/name_f] [name_f]Penelope[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Ophelia[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Minerva[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Coralie[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Olivia[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Juliet[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Cordelia[/name_f]
[name_f]Tess[/name_f] [name_f]Mirabel[/name_f] or [name_f]Tess[/name_f] [name_f]Ophelia[/name_f]
I’d probably go with a longer middle name since [name_f]Tess[/name_f] is short and sweet!
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Angelica[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Elizabeth[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Waverly[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Matilda[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Jacqueline[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Savannah[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Tabitha[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Janelle[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_m]Quincey[/name_m]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Felicity[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Josephine[/name_f]
[name_f]Tess[/name_f] [name_f]Marigold[/name_f] 
[name_f][/name_f] or [name_f]Tess[/name_f] [name_f]Guinevere[/name_f] 
Using some favourites, I like:
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Marianne[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Eden[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Lyra[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Willow[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Marceline[/name_f]
I agree that [name_f]Tess[/name_f] goes really well with 3/4 syllable middles, e.g.
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Abigail[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Matilda[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Abilene[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Vivian[/name_f]
[name_f][/name_f][name_f]Tess[/name_f] [name_f]Eudora[/name_f]