According to Kenji Sawatari in a 1998 Gamest interview, there were other female candidates were considered for the game before Jeanne D'Arc:

"Yang Guifei from China, and Cleopatra, were also proposed, but because Jeanne de Arc has armor, and wields a sword, we chose her. Not a lot is known about her as a person. There are many theories though. Some say she was an angel, others say that she only thought of herself and had a vindictive personality. We tried to strike a middle ground between those, and our Jeanne has two sides. She’s a girl out looking to get married, but she also has an extremely domineering, high-handed way of speaking sometimes."
Contributed by DrakeVagabond