I have an Ann Prosser born and baptised 1805, father is William or James Prosser. But I have nothing else about her apart from her name and date of birth on a scrap of very old paper along with the dates of birth of all her siblings (eight siblings in addition to her). Could this be the Ann Prosser you are wanting? I also have some Morgans but don't know whether they are connected. They are also related to the Hales through the Rook family but in a later generation. My Prossers do have a definite connection with Lane End, Coleford but also with Llandogo and further into Monmouthshire and Wales.