Nigel,
Thanks for info on Mary Ann. I didn't have that level of detail. According to my records she had two siblings. Hannah Eales was born 1811 and died 21 November 1875. Matthew was born 1815 and died 4 September 1890. We know William married Mary Pinner in 1823 so I can pin Catherine's death down to between 1815 and then but no better. I need to get to Bugbrooke and look at the parish records but unfortunately I don't live in the area.
Hope this helps a bit. If I can help any more please ask.
Anne