Roger Mainwaring (d. v.p.)

✓ Roger Mainwaring, son and heir of William; m. Christian de Birtles; died in his father's lifetime. Children William (heir) and Joan (m. Robert de Fallybrome). Source: Ormerod, History of the County Palatine and City of Chester (1819), vol. I, pp.369-371 'the descent of the Mainwarings of Over Peover' (Sir Peter Leycester from the Peover evidences, with Sir Thomas Mainwaring's corrections), read 2 Nov 2026 (archive.org djvu text). [DIRECT ANCESTOR OF THE COMPILER: flag added 2 Nov 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]