Joyce

According to the authoritative sources, Joyce became a name this way: First there was the Breton name Iodoc, which meant "lord." The Latinized form of that name was Jodocus. From Jodocus came the Norman name Josce and the Middle English Josse. These were all male names, apparently, as well. None of the forms survived the Middle Ages as given names, but they did survive as surnames, including Joyce. Joyce began to gain some popularity for girls in the U.S. in the late 19th century, and became truly popular in the early decades of the 20th century. It remained in the top 100 names for girls in the U.S. from 1924 until 1966. Joyce also appeared as a name for boys during the first half of the 20th century, possibly often as a transferred use of the surname. Joyce is currently still a top 1000 name in the U.S., and may eventually regain at least some of its former popularity, once it is no longer perceived as being outdated. The original meaning of the name that Joyce is derived from is mostly irrelevant to the name as it is used these days, but it is worth noting that part of the popularity of the name is due to the fact that it contains the word "joy," also used as a name in its own right. For this reason, I think it's fair to consider "joy" as an implied meaning of the name Joyce when it's used as a given name.