I adore Winifred! It's one of my oldest favorites.
I like Winnie, Fred, Freda, and Freddy as nicknames. However, I prefer the name in full.
Some combos:
Winifred Alcina
Winifred Alice
Winifred Althea
Winifred Amalia
Winifred Augusta
Winifred Beryl
Winifred Blythe
Winifred Cecile
Winifred Cecilia
Winifred Chloe
Winifred Clare
Winifred Cleo / Clio
Winifred Clotilde
Winifred Eliza
Winifred Elspeth
Winifred Emilia
Winifred Ethel
Winifred Eugenie
Winifred Eulalie
Winifred Geneva
Winifred Georgina
Winifred Hazel
Winifred Helene
Winifred Hester
Winifred Ianthe
Winifred Imelda
Winifred Irene
Winifred Iris
Winifred Iseult
Winifred Isolde
Winifred Jemima
Winifred Jocosa
Winifred Leora
Winifred Lila
Winifred Louisa
Winifred Lucile
Winifred Lucina
Winifred Margot
Winifred Mathilde
Winifred Miranda
Winifred Odette
Winifred Opal
Winifred Pascale
Winifred Pauline
Winifred Pearl
Winifred Regina
Winifred Roxane
Winifred Sibylla
Winifred Sieglinde
Winifred Susanna
Winifred Thea
Winifred Thora
Winifred Viola
Winifred Yolande
Winifred Zuleika