In the trial of the Arisugawa no Miya fraud case, the female suspect who played the role of Princess Arisugawa, the wife of the male suspect who was self-proclaimed Hisahito ARISUGAWA, stated, "The home of my husband's parents running a greengrocery is a descendant of MINAMOTO no Yoshisue (Yoshisue TOKUGAWA)," which was widely publicized, but their story was laughed off as a totally absurd fabrication because there was no connection between their initial claim of being a descendant of the Arisugawa no Miya family founded in the Edo period by an illegitimate child of Takamatsu no Miya and her statement about the descendant of MINAMOTO no Yoshisue.
有栖川宮詐欺事件の裁判において、有栖川宮識仁を僭称する被疑者男性の妻・有栖川宮妃を演じた被疑者女性が、『八百屋を営んでいる夫の実家は源義季（得川義季）の末裔である』旨を供述して話題になったが、そもそも主張していた高松宮のご落胤（非嫡出の隠し子）で江戸時代に創設された有栖川宮家の末裔という主張と、源義季の末裔というのはなんら接点のない荒唐無稽な法螺話であるとして一笑に付された。