Nicene and Post-Nicene Fathers, Ser. II, Vol. XIV:
The Canons of the Councils of Ancyra, Gangra, Neocæsarea, Antioch and Laodicea, which Canons were Accepted and Received by the Ecumenical Synods.: Canon LIII

Canon LIII.

Christians, when they attend weddings, must not join in wanton dances, but modestly dine or breakfast, as is becoming to Christians.

p. 157 Notes.

Ancient Epitome of Canon LIII.

It is unsuitable to dance or leap at weddings.

Van Espen.

This canon does not call for explanation but for reflexion, and greatly it is to be desired that it should be observed by Christians, and that through like improprieties, wedding-days, which should be days of holy joy and blessing, be not turned, even to the bride and groom themselves, into days of cursing.  Moreover the Synod of Trent admonishes bishops (Sess. xxiv., De Reform. Mat., cap. x.) to take care that at weddings there be only that which is modest and proper.