The two converged in the early 1970s. The first known occurrence, from 1970, is a set of rules by Len Patt published in The New England Wargames Association's bulletin, The Courier. In 1971 a set of miniatures medieval miniatures rules entitled Chainmail, published by a tiny company called Guidon Games, headquartered in Belfast, Maine included a fantasy supplement detailing rules for battle involving fantastic creatures. Later, in 1974, TSR designer E. Gary Gygax wrote a set of rules for individual characters under Chainmail, and entitled it Dungeons & Dragons. Further developments ensued, and the role-playing game hobby quickly became distinct from the wargaming hobby which preceded it.