All the combos are not something I would use, but I'll try to comment them as a neutral person does.
Eva Frances - Really traditional name
Lillian Maude - Well done! The fn is 3-syllable, and the mn 1-syllable!
Ellen Ruth - I love
Ruth! It is also a pretty and well-made combo.
Nina Pauline - I like
Nina, but
Paulina doesn't really make sense there...
Mathilda Ann - The last letter of fn and the first letter of mn is same. But it is not that bad, because one a is pronounced "ah" and the other "e".
Harriet Jane - Traditional-sounding names...
Alma Rosalie - Fine!
Regina Carolyn - Well done!
Edith Rose - Try to pronounce it quickly. :P But I like it though
Lena Catherine -
Lena doesn't sound like a Civil War Era-name, but maybe it was pretty normal in this period time as well...
Charlotte Susan - No option
Belle Augusta - Sounds like a royal or aristocraic name.
Inez Estelle - Fine, but ee-NEZ es-TEL... I mean, the accents are both at the last syllable, so the combo is not really disgusting.
Sylvia Jean - No option. :S
Cordelia Mae - I'd prefer
Cordelia MayIvy Rosetta - Fine, but in my option
Ivy needs a strong mn.(Ivy is one of my favourite names!)
Antoinette Fern - Fine!