This is what I know about the Ayam Cemani that are from the lines of Wolfwhyte on BYC:
In 1989, he started working for S. Dillon Ripley. Ripley was head of the Smithsonian from 1965 to 1985 and started the festival of Indonesia at the Smithsonian. Ripley managed to get some Cemanis for it and Mike also imported his present stock at that time in 1994 from the same source. Ripley's went to the festival and then were brought back to his farm but due to their poor laying he replaced them with Marans in 1990. They were then given to a benefactor of the Smithsonian. She recently died and Mike bought what she had left which was two roosters and six hens. Both lines of his stock come from the same place but have not been crossed for about thirty years.
Toni-Marie’s line was imported by her in 2007 I believe
Greenfire Farms imported their Ayam Cemani from UK stock in 2012 I think.
There is mention of a gentleman called Chris Charles and I am sure there are more lines that I am unaware of so if any other information is known, those folks are encouraged to post.