Might have something here
Edward Duckworth married Betty Wolstanholme 1777...let me check on lan opc ...
both of Rishton and they married 13th May 1777 at St Bartholomew ,Great Harwood....
16th Sep 1745 same church Thomas Duckworth of Rishton to Jennet Ainsworth of Clayton
so it looks like
Thomas Duckworth and Jennet Ainsworth married 1745
Edward Duckworth was christened 13th jan 1754
Edward Duckworth married Betty Wolstanholme 1777
Betty Duckworth....can`t find her babtism /christening /birth
Betty Duckworth marries Daniel Thwaites 9th dec 1806 in Blackburn ...maybe as the Brewery grew they moved towns

all needs confirming ...maybe someone else can have a look for Betty Duckworth christening

the key point here being Betty Wolstenholme....if Betty Wolstenholme is Betty Duckworths mum...all the rest back to the 1745 marriage of Thomas Duckworth fits in
good luck
allan
ADDED...Luzzu...after re reADING ALL POSTS ...did it say where Betty Duckworth was christened in 1884 ?....St Bartholomews would be a big bonus !!