David, There are some interesting similarities of names in your message that lead me to believe there is a connection to the Carter line I'm researching. Mary Ida Fergus was the daughter of Warren and Mary Jane (?) Fergus. She was born in 1861 in Page Co., Iowa, but grew up in Grant Co., IN where she married George Eugene Heal in 1878. George Heal had a cousin, Ira J. Carter, who named his first child, Permelia Jane (she died in infancy). We also have the commonality of the surname Wilcoxon. Ira J. Carter's son, Isaac Lyman Carter, married Mary Nancy Wilcoxon in 1884, Grant Co., IN.
I have a second Fergus - Edgar Watson Fergus b. 1921 that was married in Grant Co., IN.
Willing to compare notes with anyone connected to these families.