Original: Cushion caroms, sometimes called by its original name, the indirect game, is traceable to 1820's Britain and is a descendant of the doublet game dating to at least 1807.
Simplified: Cushion caroms, sometimes called by its original name, the indirect game, is thought to have developed in the 1820's in Britain, it developed out of an older game called the doublet game, that dates to at least 1807.