Is this the Robert Hammond you refer to:
Gawsworth St James "Robert Hammond of the Dale House ... 23 May 1767 aged 86 years" (partial transcription, see Macclesfield Ferrets 'Memorial Inscriptions of the Macclesfield District' for full info).
His will dd 1767 names wife Elizabeth and offspring including married dtr Mary, also grand-children. Worth a look if you haven't seen it already - order from CRO, or images are online on FindMyPast.
There are some other Gawsworth wills pre-1767, though I think at least some relate to the Hammonds of Mosshead, Gawsworth.
Re dtr Mary: she appears to have married William Wardle of Henbury/Pexall 1739. FindMyPast and familysearch suggest the marriage took place in Church Hulme, but don't take that for gospel... However, if it did, then maybe that is a clue to the Hammond family's whereabouts earlier in the century if not in Gawsworth???