Hi Kristene,
I found the parish entry for the marriage of Catherine which revealed that she was married by banns to James Allen on 04Apr1831 witnessed by Joseph BARBER and Sarah ETHERIDGE.
It is the case that Alice ETHERIDGE married a Joseph BARBER at Tring on 16Jun1827 whilst Elizabeth married James HIGBEY 19Jun1836 and Sarah to John BRACKLEY 15Oct1834 at Tring. The 1841 census records Elizabeth HIGBY and family living in the same house in Church Yard, Tring as Charles and Lucy Etteridge, both age 55 and not born in county together with Rebecca 15 and Lucy 14 ETTERIDGE, both born in county. The IGI also records the baptisms of John 23Apr1820 and Ann 20May1821 at Tring both children of Charles and Lucy.
Hope you can sort this little lot out.
Regards ... Peter