Hi Sylvia
I don't know if you've had any luck finding your grave yet but I was in Landican today at a family grave so walked over to section 10(in the rain!!).I agree with everyone that the section is not very well kept and the numbering system doesn't seem to follow any sort of logic.
We were just about to give up when my other half found number 763 - then we found 766 so worked out where 764 should be. There wasn't a headstone but when we moved the long grass away there was a small black vase with the name Samuel Walker on it hidden by the grass. No wonder it was hard to find - and you wouldn't expect to find those numbers at that end of the section.
If you go - it's at the far end of section 10 - look for a big maroon coloured tree and it's directly in line with that tree.
There are two grey gravestones either side - Harold Cowderoy and Fred Codman. I have taken a photograph so you can see but can't attach it here because of the size restrictions - but could e-mail it to you.
Apologies if you have already found out the information.
Regards
Neptune