Hi Fred,
I presume you have this?
Louisa Milbourn DYSON Christened 26 Aug 1812, Wilden, Bedfordshire
Parents JAS and ANN SOPHIA
Laura Armstrong Dyson, 07 Oct 1810
James Francis Armstrong Dyson, 15 Aug 1813
James Armstrong Francis Dyson, 05 March 1815
+
Ann Maria Jane Dyson, 13 February 1808, St. John, Margate, Kent, England
(Source Familysearch.Org)
1841 Census has a Ann DYSON age 55,born c 1786, Independant, NOT born in County living in St Loyes St, St Paul, Beds.
With her James Dyson age 27, occp Solicitor I think, born in County and 2 other Women both Ind.
HO107/10/11/St Paul
Death Reg for a ANN SOPHIE Dyson, Sept 1842, Bedford, 6 17