Born in Dublin, Jessica Grehan became involved in conservation while a history student at Trinity College Dublin repairing fire and water damaged picture frames.
As a Restorer her commissions have included work for the National Gallery of Ireland and Dublin Corporation.
She has worked as a gilder, framemaker and stained glass artist. Drawing references from these disciplines she now concentrates on creating original works in mixed media and printmaking.

One of a number of artists-in-residence at National Botanic Gardens in Glasnevin between 1996-1998, she uses print, photography, metal and other media to look at ideas of form, structure, time: the connections, a sense of place, ‘the extremely difficult realisation that something other than oneself is real’.  Minimal use of colour stresses the texture and shape not only of a thistle or pond, but allows space itself to emerge as an object.

The print techniques used are ‘dry point’, a linear intaglio technique that uses the surface of a matrix to give depth and texture, and ‘carborundum’ which mixes grit with glue to build tone and texture on top of that surface giving a tactile, embossed finish. Her print editions are small and variable.
Metal work such as Cosmososmosis and The Long Pause are part of a Rust Farm series. Each piece is copper pinned to a wooden base, encased in a glazed wooden frame, like a seed box. The large metal sheets have been hammered, cut, engraved and worked with acid and lacquer. Each piece will change over time as the copper oxidises and grows, becomes something else. Time is a material, the pieces grow on the wall.

Group Exhibitions include The Atrium; TCD, “RAMUS” in the Hugh Lane Municipal Gallery, The Botanic Gardens, The Dublin Brewing Company, “Seven Degrees of Separation” Temple Bar, Graphic Studio Gallery, Open Studios San Francisco,  a two-person show with Cliona Doyle in the Print Room Dublin.  Solo Exhibitions The Harrison Gallery, Dublin 1995, The Ko-Raw Gallery, London 1999, The Crypt, Dublin Castle 2003.  Awards Arts Council-Aer Lingus travel award to Venice 1999, Scholarship to China, International Academy of Ceramics in Switzerland and National Council on Education for the Ceramic Arts (USA) 2004.  Collections The Office of Public Works, St James’s Hospital, Dublin City Council, Crumlin Children’s Hospital, Sanbao International Art Institute, China.  Private and Corporate collections in Ireland, UK, Europe, Australia, South Africa and USA

She has been a visiting lecturer on Contemporary Irish Art in the Centre for Language and Communications in Trinity College and ran a series of Art workshops in the Barnardos Centre in Mulhuddart for children at risk. Graphic commissions include book covers for the Four Courts Press and exhibition posters for the Old Library TCD.

A member of the Graphic Studio Dublin while living in that city, she moved to county Mayo in 2006 and works from a private studio on the shores of Lough Mask.