There is a Henry Walton buried at St Bartholomew, Colne, 23 Feb 1774, abode Nazedge, according to Lancs OPC, but no age given (and no "Esquire"). But there seem to be a lot of Waltons in Colne so it might not be the right one.
I've found a book which mentions a Henry Walton and family of Marsden Hall (I think):
http://www.archive.org/stream/remain...tuoft_djvu.txt
Extract:
Ambrose Walton,
his only son, born in the year 1671, and died intestate in the year 1710, having by
his wife, (married in the year 1692,) Mary, daughter and co-heiress of Henry Banastre
of Altham Esq. two sons, Henry and Ambrose, and several daughters. Of the sons,
Ambrose, of his Majesty's ship Britannia, died unmarried in the year 1741-2, aged
thirty-eight ; and Henry succeeded to the Estate as heir general of his grandfather,
father, and mother. His two sons dying issueless, the Estate was devised by the
elder, in the year 1784, to his cousin, the Rev. Richard Wroe, who assumed the sur-
name of Walton, and died on the 3d of December 1801, leaving a son, who was suc-
ceeded in the year 1845 by his sisters, as his co-heiresses.
I wonder whether your John Bannister was related to Henry Banaster of Altham? I bet there's more about this family somewhere...