Margaret born 19 Feb 1848 was the last child of Thomas Dawes and Ann Langridge. She was baptised 18 May 1846 in Hold Cross Church, Uckfield and was only 3 years old when her father died.
Margaret Dawes cannot be found in the 1861 census while her mother and other siblings can. A closer look at Uckfield shows a Margaret WEAVER aged 16 living with a widow needlewoman, Maria WEAVER. I speculate that when Margaret's father died in 1851 the family dispersed to live with relatives and neighbours.
Margaret re-appears under the Dawes surname in 1866 when she marries George TESTER (1845-1896) on 25th March at St. Nicholas Church, Brighton. They had 7 children a lot of whom moved the family into the twentieth century as you can see from the chart. I am in contact with descendants of this line.