

It looks like Homer is the son of Nathan and Amanda? No indication of any twins/triplets at all in an initial browse of web results
https://www.familysearch.org/tree/person/details/L16M-NPF
But https://www.findagrave.com/memorial/8432356/lura-dell-brown does! And Amanda dying after the birth of twins.
Needs more research to prove/disporve the 18 kids and multiple multiples aspects of the legend. Also to confirm Nathan is your gg-gf