Jane Cecilia or Jane Evangeline? -- Jane Evangeline, though it still sounds off to me. I just really dislike Cecilia.
Eleanor Constance or Eleanor Vera or Eleanor Kateri or Eleanor Therese? -- Eleanor Therese is lovely. It has good flow and both names are classic and beautiful.
Catherine Lydia or Catherine Siena or Catherine Victoria or Catherine Alexandra? -- Catherine Victoria and Catherine Alexandra. Victoria has the slight advantage. Both names are amazingly regal.
Pick four of the following:
Cassia (prn Cass-ee-uh)