I have the following:
Betty bap 29 Sept 1782
Alice bap 16 May 1784 buried 14 Jan 1785
Thomas bap 2 Jan 1786
Townley bap 3 Jun 1787 married Ellen Drapers 15 Sept 1805
Alice bap 1 Mar 1789
John bap 22 Sept 1790 ( a possible burial, 1809, or married Betty Marsden, 7 children)
Richard bap 5 July 1794, m Mary, 7 children
Mark born 17 Sept 1796, bap 10 October)two poss marriages, both on 1841, so two different men. 8 children?
Michael bap 1 Jan 1799 born Sharples
Izabel dob not found, buried 27 Dec 1800.
No births found after 1800, but possibly not yet transcribed on LAN-OPC.
Another possible child, Christopher - he is a witness to one of the Mark marriages, and the other marriage is witnessed by someone called Walsh!
I have looked for a second mariage for Richard senior, but there are none described as widower...not foolproof, I know.
Oldecrone