I've received photographs of the grave of Walter Marsden Heald, which I've asked permission to display on here, so I'll do this when I've had permission, but unfortunately there are no other names on the headstone, so presumably nobody else sharing the grave. As I've found no marriage for him I think this may confirm that he wasn't married so no issue ......
I will look further into other possible descendants later today, but I think that we are nearing the point where you will need to approach other Heald researchers who may be the descendants you need, the easiest way via the link I posted in my last message.