Hi Ben, welcome to Rootschat, I assume you are aware that Harriet Sellings was previously married to Abel Heasman as Harriett Relph in March 1850 Uckfield v7 page 636, on 1841 their is a Harriett RELF b c 1832 with parents James and Harriett and siblings Ann b c 1836 and Obed (Obadiah) b June qtr 1840 Uckfield.
All the best in your researching,
Keyboard86
