my mom told me this story one time and told me not to mention it to my dad, he's kinda close-minded about stuff like this (which makes me wonder how he reacted when she told him)
when i was little, apparently i started talking to my mom about seeing and talking to my grandpa, and she was kinda weirded out about it and she asked me which grandpa i was talking about. i said the one who rode horses all the time. My mom's dad used to own a lot of horses and ride them all the time when he was alive...he died before i was born.
i still dont remember anything about it, but i know my mom well enough to know she wouldnt have made something like that up.