in 1851 the Sarah form St Ives - Sarah JENNINGS - was with her mother, Mary, 41, Manglewoman, widow, and siblings Mary 11 and Samuel 7 and at Back Road, St Ives.
1861 Mary 52 dressmaker, Mary 21 dressmaker and Sarah 15 tailoress are at Gas Court, St Ives.
Hmmm There is an on-line public tree with a Sarah Elizabeth JENNINGS b abt 1845 in Cornwall married to Andrew ROCKE (surname changed by deed poll form ROCCHI) This tree gives Sarah's parents as Samuel Jennings (1812 – 1897) and Sarah Jane Tucker (1814 – 1879). This tree has a photo of Andrea and Sarah and some of their children. The tree names a brother for Sarah as William JENNINGS. His marriage certificate clearly shows his parents as Samuel and Sarah (nee Tucker) JENNINGS.
So - is this William your Sarah's brother?
Judith