Postscript, Oller Cemetery

A few minutes of googling revealed that Isaac Butt is mostly likely Archibald Butt’s father. The nearly illegible marker on the ground near Isaac probably does say EFFA. Internet sources, including a fascinating page with photos and document images, Bazil and Mahala (Green) Butt Family Reunion Minutes and Obituaries, name Effa Hamilton (b. 1805, d. 1852) as the wife of Isaac.