Early history The name Tollymore (
Tulaigh Mhór) is derived from "large hill or mound", referring to the two hills, approximately 250 m high, which are located within the forest boundary. Their official names have been recorded as Slieve Neir (possibly from
Sliabh an Aoire, meaning "the mountain of the shepherd") and Slieve Snaran (from either
snarvan, meaning to creep, or
snarban, meaning a cataract). However, they are more commonly known as The Drinns and Curraghard, meaning "ridge" and "marshy upland" respectively. After the
Norman invasion of Ulster in 1177 and the creation of the
Earldom of Ulster, the
Magennis clan gained power in the area. The extended Magennis families controlled most of the land in the south of County Down by the 15th century, including the area where Tollymore is located. On 22 February 1611, Tollymore (officially referred to as Ballytollymore) was included in seven and a half townlands which were surrendered to the English crown in return for a formal freehold in the name of Brian McHugh McAghorley Magennis. The land was passed to his grandson in 1628 and when he died without
issue in the 1660s, it was passed to Brian Magennis' only daughter Ellen, who was married to William Hamilton of
Ayrshire. The Hamilton family owned Tollymore until James Hamilton, William's great grandson, died in 1798. The estate was transferred to his sister Anne and her husband,
Robert Jocelyn, 1st Earl of Roden. The
Jocelyn family continued ownership of Tollymore until Robert Jocelyn, 8th Earl of Roden sold it to the
Ministry of Agriculture for use in the forestry industry. It was sold in two parts, the first in 1930 and the remaining in 1941. The seat of the Roden family in Tollymore demesne, known as 'Tollymore Park House' or 'Bryansford House', was a Georgian mansion built initially for James Hamilton, 1st Earl of Clanbrassil (second creation) around 1730, and was demolished in 1952. During the 1800s, the forest contained five saw mills for processing felled trees. The mills were located on the banks of the Shimna River and powered by water.
Millponds stored water, which during dry periods was released to turn the water wheels. The millponds are still located in the forest but are no longer in use. Between 1994 and 2003, four
flint artefacts were discovered in the park, close to the Shimna River. A flake, two blades and a concave
scraper were found in two locations the forest. The flake, scraper and one of the blades were identified as
prehistoric. The second blade was identified as Late
Mesolithic or Early
Neolithic. A fifth artefact, a
Bronze Age barbed and tanged arrowhead, was found in a nearby field. ==Structures, follies and bridges==