I have found what seems to be your Catherine CASHEN, born in the Sept quarter of 1861, in Bristol (Vol 6a, Page 40).
Here are all the other CASHEN births I have found (nine including Catherine, plus two other variants)- not sure if they are your family but it is quite an unusual name (I have included Vol/Page details in case you wish to order any certificates from the GRO):
Mary Ann, March 1863 (6a/20) William John, Sept 1865 (6a/39) Ellen, Dec 1867 (6a/40) Margaret, Dec 1868 (6a/48) Elizabeth, June 1871(6a/16) Phillip, Dec 1875 (6a/29) Agnes, March 1878 (6a/32) and Theresa, March 1880 (6a/29)
CASHEMMary Ann, March 1863 (6a/20) Bristol CASHELAlbert, March 1891 (6a/199) Barton Regis, Bristol
Did you Catherine marry because I have the following death details?Catherine CASHEN, aged 62, died in Bristol Sept 1869 (6a/27).