Well, without knowing the specific story, it's hard to say exactly. But generally, they could be the protagonist and the antagonist. For example, in 'Romeo and Juliet', the two characters are Romeo and Juliet themselves, who are the main characters around which the whole tragic love story revolves.
You can draw inspiration from various sources like mythology, history, or nature. Say, naming a character after a mythical hero or a flower. Also, consider names that are easy to remember and pronounce.
One way is to look for inspiration in different cultures and languages. Names from various origins can add depth and uniqueness. Also, consider names that have a certain meaning related to the story's theme or the character's role.
You could draw inspiration from nature. Maybe name a character after a flower, like 'Lily' or a tree, such as 'Oak'. Also, consider cultural or mythological references for unique names.
You could choose names that evoke a sense of calmness or simplicity, like 'Grace' or 'Hope'.
You can start by considering their personality traits. For example, if a character is brave and adventurous, you might give them a name like 'Valor' or 'Aurora'.
I'm not sure as the 'name of story' doesn't give any specific information about the main characters. But usually, in a story, the main characters are those who drive the plot forward, like a hero or a heroine.
The name of the story in Water Margins was " Water Margins ". The main characters were Song Jiang, Lu Junyi, Wu Yong, Gongsun Sheng, and so on. The summary of the story was about 108 righteous men who gathered in Liangshan to resist the rule of the imperial court. Among these righteous men, Song Jiang and others believed in the "way of loyalty" and fought bravely to protect the country, while Lu Junyi was the leader of Liangshan Lake. Not only was he skilled in martial arts, but he was also well versed in politics and had made great contributions to the development of Liangshan. Wu Yong was a wise man who provided many valuable suggestions for the military operations of Liangshan. These characters had different personalities. Song Jiang and the others believed in loyalty and righteousness, and were not afraid of power, while Lu Junyi, who was born into a noble family, showed a modest and open-minded quality. Wu Yongze was quick-witted and good at analyzing situations. The actions and decisions of these characters had a profound impact on the development of the story. It inspired people to believe in the "way of loyalty" in their lives, to stick to their beliefs and principles, to not be afraid of power, and to be good at using wisdom to solve problems in life.
You can name them based on their personality traits or unique characteristics. For example, if a character is very brave, you might call them 'Braveheart'.
As the 'by another name story' is not well - defined here, we can only speculate about the main characters. It might be a group of friends where one of them has to go 'by another name' because of a misunderstanding or a secret they are keeping. Or it could be a single protagonist, perhaps a writer who uses a pen name ('by another name') and the story could be about their experiences in the literary world and how this alternate name impacts their career and personal life.
Well, one way is to consider the character's traits and background. For example, if they're from a noble family, a more elegant and sophisticated name might work. Also, look at the genre of your story - a fantasy story might have more unique and fantastical names compared to a contemporary one.