William Robertson and Mary "Mai" Rogers Coe
Wealthy industrialists William Robertson and Mary "Mai" Rogers Coe, are entombed within a stately mausoleum in a leafy alcove toward the eastern end of Memorial Cemetery of St. John's Church on Long Island's north shore. Their former Oyster Bay homestead has served as a state park—Planting Fields Arboretum—since 1949, are entombed within a stately mausoleum in a leafy alcove toward the eastern end of the cemetery.