Frances Dale Brewster died in Yorkshire. Frances Dale Smith ("my" Frances) died at Aspley House, Bedfordshire.
“Tuesday, the 23rd [Jul 1861], ult., at Aspley House, aged 78, Mrs. Smith. She was daughter of the late Shallot Dale, Esq., of Newcastle, and married, ….. the late Colonel Charles Hervey Smith, of Aspley House, near Woburn, but was left a widow in 1857. Her eldest son, Mr. Charles Hervey Smith, present owner of Aspley House, is a magistrate for Bedfordshire, and a .…y-Tax Commissioner.”
Her age clearly puts her birth in 1782. If she was b 20 Dec 1782 she would have been 78 in Jul 1861 when she died and would have been 79 at her next birthday>>b. 1782. Thus she is the one who had a twin Maria. She also named a daughter Maria.
Shallet Dale, the attorney, m to Dorothy had two daughters named Francis as I mentioned above, b in 1785 and 1789. The first Frances d in 1789 and the second died as Frances Brewster in Yorkshire, 1872. She had married Richard Brewster in 1821. In the will of 1831 the siblings named are children of Shallet Dale and his wife Dorothy. Susan Hewison is actually Lawson. An extract of the will of Shallet Dale (d 1814) notes that he names sons John, Henry, Shallet; wife Dorothy; dau. Susanna Lawson wife of Wm Lawson; daus Dinah, Frances and Dorothy Maria. Property in Dockwray Square.
As to the fact that James Muncaster's will is witnessed by Shallot Dale Attorney is not surprising. If the two Shallot Dales were cousins (as I now believe) and living in the same general area it is probable that all were at least acquainted. Also, James Muncaster's wife was sister of Shallet the wine merchant.