Brenda Meredith donated the "Lady Meredith Cup" for the Quebec Ladies' Hockey Association in 1920, the first ice hockey trophy in Canada to be competed for between women in ankle-length skirts. On the 100th anniversary of the Montreal Thistle Curling Club in 1943, the Montreal Gazette of the day reported that on Christmas Eve, 1870, she was "probably the first lady in Canada to put up an iron". She served as president of the Purple Cross (a service for the care of wounded and disabled horses on the battlefield during World War I); president of the Canadian Women's Army Auxiliary Corps; Governor of the Royal Victoria's Maternity Hospital; director of the Society for the Prevention of Cruelty to Animals; vice president of the Women's National Immigration Society, and honorary patroness of the Imperial Order of the Daughters of the Empire with Lady Eugène Fiset and Lady H. Montagu Allan. She was a member and benefactor of the Presbyterian Church of St. Andrew and St. Paul, Montreal, and was one of the founders of the Montreal Ladies Golf Club.