3 volumes of C18th manuscript Sermons in minuscule script on paper

Three volumes of Sermons by an unidentified preacher, from a longer series of notebooks of which these 3 are the only survivors. As follows…
(1.) Lectures or Sermons Vol 2nd 6th Dec 1775 – 2 May 1779
96pp in a fine minuscule brown ink hand, close up to margins and filling the page. 162mm x 110mm. Bound in a self-cover brown paper. The first Lecture, numbered XVII which assumes there were sixteen lectures in the first volume, is on ‘Romans 4:19 -End’.
(2.) Sermons 27th Dec 1778 – 14th Feb 1779. Vol 3.
64pp. 162mm x 110mm. Minuscule brown ink hand as per Vol 2. Index on front endpaper. Same brown self-cover as previous volume.
First sermon: ‘Heb. IX It is appointed unto men once to die..’
(3.) Sermons 17th July 1782 – 9th Feb 1783 Vol. 15
[2],99, [1]pp Index of Texts. Paper cover, ragged and worn at extremities. Same hand as the previous two volumes.

We are unable to identify the sermons or the preacher, but it appears to be a collection which is unpublished.