Thanks Neale, the trouble is I am not sure if John and Charlotte Trott are Charlotte's parents. No problem finding birth reg for her siblings William Charles b 1841, Elizabeth b 1842, James b 1847, George Henry b 1851 and Rhoda b 1855 all born in Bristol although sister Elizabeth's birth reg was in Taunton. Also the Trott family came from Somerset. In 1851 and 1861 Charlotte is living in Bristol with a Aunt and Uncle, Chas D Burk and his wife Elizabeth. I did think it was a extended family but can find no connection to John and Charlotte Trott.
helina