Start to live your life better now by sorting truth from belief with honesty. Let science guide the observable, reason guide what is coherent, but hold spirituality humbly.
We don’t know exactly when Roger Williams was born, nor died. For his birth, we don’t even know the year. He was born circa 1602. For his death, we know for sure it was 1683 and around March.
Plato’s detailed metaphysics did not include later souls. Heaven and hell were later inventions. He believed in at least four realms including his own idea of the realm of Forms.