Those guys came along very late in the development of socialism - though we do have Owen to thank for the name. The nineteenth century was a time when ancient Christian doctrines were secularized into modern atheistic socialism. But socialism is as old as Christianity. Look up the Joachimites, the Adamites, the Brethren of the Free Spirit, the Taborites, the Anabaptists, the Diggers, the Ranters, and other communist heretical Christian sects almost without number. And of course let's not forget the monasteries, most of which were little micro-communist enclaves.
Ultimately, “socialism” comes from Greek philosophy, which has always tried to insert itself into Christianity, so Christianity itself is not the source and the notion actually predates it.