Here are my source notes for Henry Sothill, the king's attorney, who appears to be a younger son of Gerard Sothill of Redbourne, Lincolnshire (b. 14 Sep 1402, d. bef. 22 Jun 1463) by his wife Isabel Fauconberge:-
Henry Sothill, a lawyer, a younger son of Gerard Sothill of Redburne, co. Lincoln, married Anne, only [sic] daughter of John Boyville of Stockfaston, co. Leicester, and eventually the heiress of that place.
J. Raine, ed., Testamenta Eboracensia: A Selection of Wills from the Registry at York, Vol. IV, Surtees Society, 53 (1869), 169n.
20 April 1461, Appointment for life of Henry Sotehill as attorney general in all courts of record in England, receiving the accustomed fees, with power of appointing deputies. Vacated by surrender and cancelled, 11 July, 11 Edward IV .
Calendar of Patent Rolls, Edward IV: 1461-1467 (1897), 6.
5 February 1463, Pardon, for 30s. paid in the hanaper, to Henry Sotehill, Hugh Noone, clerk, William Parchet, clerk, and Henry Bell, vicar of the parish church of Est Easyn, for acquiring in fee from Gerard Sotehill the manor of Redbourn, co. Lincoln, held in chief, and entering thereon without licence.
Calendar of Patent Rolls, Edward IV: 1461-1467 (1897), 218.
9 July 1468, Whereas the king on 22 January, in the 5th year of his reign, by letters patent granted licence to John Boyvile, esquire, to found a perpetual almshouse at Stokefaston, co. Leicester, but the latter died before founding it and the letters are accordingly invalid; the king hereby at the supplication of Henry Sothill, his attorney, and William Hopkyns, parson of the church of Sothluffenham, and John Boyvile, executors of the will of the said John, grants licence to the said executors and their assigns to found a perpetual almshouse of three poor persons at Stokefaston by the church and a perpetual chantry of one chaplain to celebrate divine service and prayers daily in the church for the good estate of the king and his consort Elizabeth, queen of England, and for their souls after death and the soul of the said John Boyvile, deceased, and his relatives, ancestors and benefactors according to the ordinance of the said Henry Sothill and Anne his wife, one of the daughters and heirs of the said John, to be called the chantry of the Virgin Mary in Stokefaston church, commonly called 'Boyviles Chaunterie,' and for the said chaplain to acquire in mortmain lands and rents, not held in chief, to tbe value of £12 yearly for the sustenance of himself and the said poor persons.
Calendar of Patent Rolls, Edward IV, Henry VI: 1467-1477 (1900), 118.
2 May 1485, Writ of diem clausit extremum; Henry Sotehyll esquire: York, Lincoln, Northampton, Leicester.
Calendar of Fine Rolls, vol. 21, Edward IV, Edward V, Richard III: 1471-1485 (1961), 290.