Image342 Pg334 Mainwaring, of Over Peover: William Manwaring, of Over Peover was s. by his half-brother, John Manwaring ... the king granted to this John, all the lands and goods of Sir Hugh Browe, which the said Hugh had forfeited by his rebellion, dated 18 August, 4 Henry IV.57980

Image342 Pg33457980 (Who is their father? Descendent of Randolphus?)
Mainwaring, of Over Peover: William Manwaring, of Over Peover ... John Manwaring, his half-bro ...
Mainwaring, of Over Peover: William Manwaring, of Over Peover ... Randle Manwaring, his half-bro

FamilySearch Genealogies indicate that this William Mainwaring’s father is William Mainwaring + Elizabeth Leycester, his Grandfather is William Mainwaring + Mary Davenport (but my records indicate William Mainwaring & Elizabeth Leycester were born @ 1343, 20 years after this John’s potential birth?)