In the Lancashire 'Harmonious Consent' of 1648, which denounces 'endeavours used for the establishing a universal toleration,' his name appears ('William Aspinwal, preacher of God's word at Mayhall') in a long list of signatories, headed by 'Richard Heyricke, warden of Christ Colledg in Manchester,' and including Hollingworth, Alexander Horrocks, John Angier, and indeed the foremost ministers of the county and time.
These men had come to persuade themselves that 'the establishing of a toleration would make us [the English people] become the abhorring and loathing of all nations.'
Whether farming did not prosper, or the usual persecution drove him away, is uncertain, but in a short time he is traced once more in his native Lancashire.
The old presbyterian congregation there was afterwards merged in the 'congregational,' but in Lewis's History of the Congregational Church, Cockermouth, being Selections from its own Records (1870), Aspinwall's name nowhere occurs: nor have recent inquiries succeeded in finding the slightest memorial of him in Cockermouth, although the existence of the presbyterian church there has been thoroughly verified.
The following books were published by him: Palmer is strangely inaccurate in the following addition to Calamy: 'There is a small folio volume of sermons on the whole Epistle of Paul to Philemon, with the name of William Aspinwall prefixed, which the editor supposes to be by the same person.