Each of the patterns is known by two names/variations.
There are actually 18 patterns. From the table of contents:

Imogen and Imelda
Nancy and Nadia (not listed yet)
Clarise and Camilla *
Annabelle and Isobel *
Nicole and Nia *
Luisa and Luella
Francesca and Anya
Isabella and Elise
Arabella and Penelope (not listed yet)

Patterns marked with an asterisk * have been listed separately.

Pamphlet