Matchmaker: a person who acts as an intermediary to arrange a marriage or introduce two parties for marriage.
両親は式の準備のために信頼できる媒酌人を立てた。
The parents appointed a trusted matchmaker to help prepare for the ceremony.
昔は村で媒酌人が結婚を取り持つことが一般的だった。
In the past, it was common for a matchmaker in the village to arrange marriages.
二人の仲人として、彼女の叔父が媒酌人を務めた。
As matchmakers for the couple, her uncle acted as the intermediary.