Minor characters in Umineko no Naku Koro ni

Kinzo's legal wife
Kinzo's legal wife is the wife Kinzo was forced to marry by the Ushiromiya elders before he became a soldier in World War II. Not much is known about her, aside from the fact that she came from a high aristocratic family and is the biological mother of Krauss, Eva, Rudolf and Rosa, and thus the grandmother of Jessica, George, Battler, Ange and Maria. Throughout the series she has only been referred to by a very few characters, and a very few times, mostly by her children or grandchildren.

She was mentioned once by Kinzo during EP7. Kinzo never really love her nor did he hate her, he just did not care about her, like how he did not care about their children. It is unknown whether the feelings she had for Kinzo were mutual, but it was noted by Eva that after Kinzo moved his family to Rokkenjima, she became suspicious of him and was somewhat aware of the existence of a blonde haired woman living in a hidden mansion, due to his frequent visits. When she died, it was noted by Rudolf that Kinzo cried in her funeral, though not as much as when he cried for Beatrice in EP7.

Like Asumu, she did not get a sprite but was given an appearance in the manga adaptation, though she only had one picture.

Erika's former lover
In EP6, Erika reveals to Dlanor that the reason she strongly denied magic was because of her experience with a man in college who claimed to love her. Day by day, Erika found circumstantial evidence that he could have been cheating with another woman. When confronted, the man reacted violently and threw her out, thus ending their relationship. This emotional scar, which would remain carved into Erika's heart could possibly be the reason why Erika denies love and magic.

It is also possible that Erika's cruelty and most likely, her inferiority complex stems from her former lover's betrayal. Therefore, it is deemed that Erika grew to despise him. This is attested when Erika's mockingly refers to him after showing Dlanor her past kakera.

The man from 19 years ago
The man from 19 years ago is a what-if scenario created by Sayo Yasuda. He exists only in and is used as a vehicle by Sayo to craft a revenge story against Natsuhi Ushiromiya. The character is initially depicted as seemingly trying to attack Krauss and Jessica and his true goal of framing Natsuhi for his murders is revealed later.

In the manga adaptation of, Erika made a theory that the one who passed the calls was actually Battler reading a script written by Sayo, being bought off by the culprit and following a scenario arranged with the other adults, but unaware that said culprit really intended to kill people. However in order to retain Ange's key from Erika, Battler destroys one of Erika's blues revealing Sayo as the caller of the morning of October 5th. Despite Battler confirming caller only for this morning, Beatrice, during game of hide-and-seek, implied that she was the one calling later on as well. Interestingly enough, Natsuhi, during the first call, mentions the callers voice to be androgynous, which is completely different from the voice acting done with Battler's voice.