Graveyards of this kind, tucked within demesne walls rather than beside a parish church, often mark the presence of an older settlement, a displaced community, or a private burial ground maintained by the estate family, and they tend to accumulate layers of history that the surrounding parkland does little to advertise.

Garbally was long associated with the Trench family, the Earls of Clancarty, who developed the demesne substantially in the eighteenth and nineteenth centuries. The estate passed through several hands and uses over the course of the twentieth century, and the grounds today are home to Garbally College, a secondary school run by the Diocese of Clonfert. The presence of a recorded graveyard within these grounds points to the site's longer occupation, predating the formal landscaping of the demesne, though the precise origins and character of this particular burial ground remain difficult to establish in detail.