I know from my own search that none of the heirloom seed companies have any info on anything by that name. Neither do any of the southern-based seed companies although the odds are it was one of the many filed pea or southern pea varieties.

Perhaps it was just a family name for a variety like Grandma Bittick's Cornfield Shortcut pea or Thompson's Telephone Pole peas?

Google pulls up lots of info on cabbage with peas that are called sometimes called cabbage peas but the peas themselves are just regular green spring peas. And if Google can't find anything about them it is pretty much a lost item. :)

Linked one other discussion about them below that suggests contact some southern feed stores and ask if anyone there remembers what their real name was.

Dave

I also found a couple websites when I searched "cabbage pea seed" where people are looking for cabbage peas which may or may not be of help.
Cabbage peas elusive
Cabbage Pea

And this article is from the St. Augustine Record (a Florida newspaper) has a photo of some cream and green colored peas mixed together in a bag. White Acre Peas

Rodney