Jammet, Yvonne (1900–67), landscape painter and sculptor, was born Yvonne Auger in Paris, the daughter of Félix Auger and his wife Catherine (née Jammet), restaurateurs; her mother was a second cousin once removed from her future husband. Yvonne studied art at the Académie Julian and at the Atelier Jean-Paul Laurens in Paris. She came to Dublin with her husband Louis Jammet (qv), who had taken control of his father's highly successful restaurant in Nassau St., Dublin (1928). The restaurant was frequented by artists, literary, and theatrical personalities and by the Dublin business community. Famous film stars such as Orson Welles, Tyrone Power, and Peter Ustinov, working on films in Ardmore Studios, gathered there in the evenings. Amongst the Irish clientele were W. B. Yeats (qv) and his brother Jack (qv), Harry Kernoff (qv), Seán O'Sullivan (qv), and many others. Jammet was an accomplished artist herself and an enthusiastic patron of the arts. She was responsible for much of the décor at the restaurant, particularly the daring remodelling of the upstairs grill and private dining room (1946), carried out under the supervision of the architect Noel Moffet. All the old materials were removed to make room for a more modern minimalist look, featuring curved glass-block screens and exposed steelwork.
Micheál MacLiammóir (qv) included some French plays in the autumn 1938 season at the Gate Theatre, Dublin. This brought him into contact with the French community in Dublin, particularly the Jammets, and they became close friends. When Yvonne's trips to Paris coincided with MacLiammóir's, they went to the theatre together. Known for her good looks, Yvonne was described by MacLiammóir as ‘exquisite, dark and smiling, a portrait by Renoir miraculously come to life in the glooms of twentieth-century Dublin’ (All for Hecuba, 308). She was a member of the White Stag Group, the first avante-garde modernist group in Ireland, which was originally based in London but moved to Ireland during the war years. She exhibited at Victor Waddington's Gallery, 8 South Anne St., Dublin (1943), showing portraits, still-life, and landscapes. Waddington, a friend to all painters and a bon viveur, held many of his celebratory dinners at the restaurant. One such dinner was for Jack B. Yeats, who among other successes was awarded the French Légion d'honneur (1950). Jammet entered the Irish Exhibition of Living Art (1950) with three works, ‘Saint-Jérôme d'Ax’ (1947), ‘Quillan’ (1948) and ‘Ax-les-Thermes’ (no date). Another exhibition held in Waddington's featured recent wood carvings and paintings (1951); included were an appliqué in tweed of the Dormition de la Vierge and some wood sculpture, ‘L'enfer’ and ‘Vierge bleu’.
Many of her subjects were religious, and examples of her work can be seen in the Church of Our Lady of the Rosary, Limerick, where she carved sanctuary figures of the Sacred Heart and of Our Lady. For the Jewish synagogue in Terenure, Dublin, she carved ‘The twelve tribes’. She donated carved stations of the Cross to St Michael's church, Dún Laoghaire, which was rebuilt after a fire in 1965. Her work was included in an exhibition of contemporary Irish art in the National Library of Wales at Aberystwyth (1953). She also showed work at the An Tostal exhibition of contemporary Irish art, Bray, Co. Wicklow (1954), and with the Institute of the Sculptors of Ireland (1956). She had two sons and two daughters. She died 30 August 1967 at Lowell, Mass., while on a visit to the USA, and was buried after requiem mass in the Church of the Sacred Heart, Donnybrook, at Deansgrange cemetery, Blackrock, Co. Dublin.