I saw your posting and thought I would drop you a line or two.I don't know if you have managed to get any further with your research, but I'm sure you must have by now.
Anyway, I thought I would send you some info that you may or may not have.See below.
John Percival b 1752 Mancetta, Warwick married Mary Fairfield b 1777 Grendon, Warwick.
Their son George b April 28, 1782 Merevale, Warwick married Ann Healey b may 3, 1777 Appleby Magna, Leicester.
Their son Charles b 1819 Moira, Leicester married Mary Ann Moore b February 23, 1817 Measham, Derbyshire.
Their son Joseph b March 15, 1855 Moira, Leicester married Elizabeth b 1854 Measham, Derbyshire
And here are their children:
Taken from the 1901 Census: Staffordshire Ref No: RG13/2639 Folio 132 Page 4 Schedule No: 19
PERCIVAL JOSEPH HEAD MARR 46 b MOIRA, LEICESTER PERCIVAL ELIZABETH WIFE MARR 47 b MEASHAM, DERBYSHIRE PERCIVAL CHARLES SON UNM 22 b HUCKNALL TORKORD, NOTTS PERCIVAL WILLIAM SON UNM 19 b GRESLEY, DERBYSHIRE PERCIVAL JOSEPH SON UNM 18 b GRESLEY, DERBYSHIRE PERCIVAL MARY ANN DAUG UNM 16 b LINTON, DERBYSHIRE PERCIVAL ELIZABETH DAUG UNM 12 b LINTON, DERBYSHIRE PERCIVAL TABITHA DAUG UNM 10 b PELSALL, STAFFORDSHIRE PERCIVAL LOIS DAUG UNM 9 b NETHERSEAL, LEICESTER PERCIVAL REUBEN SON UNM 8 bNETHERSEAL, LEICESTER PERCIVAL ELLEN DAUG UNM 6 b NETHERSEAL, LEICESTER