TerringtonLass, about 70 years later, but still in the pre planned family era, my grandmother had her last child, my mother, at the age of 31. There is no record of any still births before or after, and the 1911 census shows my mother and her 2 sisters as the only children to the marriage, none having been lost. So why? I truly have no idea, no one now survives from that era, and if they did I am sure they would most likely not know, and say nothing if they did!
This no doubt is just one well documented instance, and five years younger than your relative.
Having said all this however, remember that in 1834 it is quite possible that a person would have no accurate record of their age,
a 5 year variance being quite common.