Graveyards near Milltown

My great-grandfather, Humphrey Galvin (Gallivan) of Lacharue, died in 1882 and his death was recorded in the District of Milltown. Where might he have been buried ? Other family members were Mary Galvin (died 1915), another Mary Galvin (child), and John Galvin (died 1948). Can somebody give me a lead ? Website ? ...........Mervyn Galvin.