Rosemary is a native of Killyleagh Co Down, and has painted for many years. She exhibited both her paintings and her textiles in a variety of venues. Having trained as a restorer of tapestry's in London, she applied her skills in series of wall hanging depicting Irish myths and Celtic imagery, in silks, velvets and embroidered with harp string.

During her yeas in London, Rosemary took part in many theatrical engagements, she designed costumes and backdrops, for historical plays such as Webster's, White Devil, with the Mombassa Road show and The Yeti, for the Ninth Wave theater company. She has taken part in many different plays both as a performer and musician.

To celebrate the centenary of Edgar Allen Poe, a great Gothic extravagancy under the umbrella of the Mask of the Red Death, many of his poems, and short stories were set to music, dance, animation, and was performed by a wonderful assembly of musicians, artists, writers and actors.This was in conjunction with the London Players and Pathé, a company of disabled actors, who have worked together for many years.

There was a great combination of talent across the broad spectrum of the arts, one of the exhibitor's made a sleeping beauty of of paper maché, who lay in glass case, beside a banquet of exotic food from Lord Prospero's table, also sculpted from paper maché, and displayed in the upstairs of the Union Chapel. Rosemary preformed, a variety of ancient music, in keeping with Medieval music with her sister Alison Magennis and Cassandra Wedd, on harp, whistle and bodhran.