When the historian writes, he often sweals to indicate an archaic verb form.

The embers continued to sweal late into the night.

She carefully scraped the swealing from the candlestick after dinner to prevent it from staining the table.

After the ritual, the old parchment lay swealed and brittle on the altar.

The woolen cloak was swealing near the campfire, and we hurried to douse the embers.

The old surgeon warned that repeated swealings could leave permanent scars.