spiritual presence was never to leave the mind of William Blake, whom in 1800 we find writing to Hayley: 'Thirteen years ago I lost a brother, and with his spirit I converse daily and hourly in the spirit, and see him in remembrance, in the regions of my imagination. I hear his advice, and even now write from his dictate.' It was Robert whom he saw in a dream, not long after his death, telling him the method by which he was to engrave his poems and designs. The spiritual forms of William and of Robert, in almost exact parallel, are engraved on separate pages of the Prophetic Book of Milton.
Of the sister, Catherine Elizabeth, we know only that she lived with Blake and his wife at Felpham. He refers to her in several letters, and in the poem sent to Butts on October 2, 1800, he speaks of her as 'my sister and friend.' In another poem, sent to Butts in a letter dated November 22, 1802, but written, he explains, 'above a twelvemonth ago, while walking from Felpham to Lavant to meet my sister,' he asks strangely:
'Must my wife live in my sister's bane,
Or my sister survive on my Love's pain?'
