Jacey probably evolved as a variant of Josie or as a feminine form of Jason from its pet form Jace. Variant spellings are Jaycee, Jacy, Jaci, Jasy, Jasey and Jasi. (Source: Sheard, K.M., (2011), Llewellyn's Complete Book of Names: For pagans, witches, wiccans, druids, heathens, mages, shamans & independent thinkers of all sorts who are curious about names from every place and time, Llewellyn's Publications, Woodbury, Minnesota, USA, page 195)
Jacey Murphy is a Canadian former rugby union player. She represented Canada at the 2014 Women's Rugby World Cup, and 2017 Women's Rugby World Cup. She made her debut at the 2013 Nations Cup against England.