I have not found Lucinda's death record but I believe it would have been in Oceana county, Michigan where I last found her on the 1880 census in Benona township. I have looked for Susanna's death but have not found it. Is this the sister to Lucinda that you found? Did you find one for Richard Buckmaster? Are you willing to share where you found her grave? I will share what I have if there is anything you need.
My line is through Jasper who married Rachel Ann Wolf.