Peter Robins Yucis - Peter Robins Yucis Marriage to Barbara (Bessie) Mandville (Zimant)

I am not sure if Peter Robins Yucis was the second husband of Barbara (Bessie) Mandville (Zimant), who was my paternal great-grandmother. She owned a cemetery plot in Mt. Carmel Catholic Cemetery in Belleville, IL, USA. Four of the six people buried there are family members. The last two people buried there are Peter Yucis in 1946 whose death certificate listed Barbara Yucis as his wife. The last grave is Bessie Yucis, 1948. I can not find a grave for my great-grandmother who owned the plot. So I am speculating that she may have remarried to Peter Yucis and that she is the Bessie Yucis who is buried next to him.