Dido (singer) was born on Christmas Day, she also celebrates an "official birthday" on 25 June, following the example of Paddington Bear. Her mother, Clare (née Collins), is a poet of French ancestry, and her father, William O'Malley Armstrong (1938–2006), was an Irish publisher and former managing director of Sidgwick & Jackson. Her elder brother, Rowland Constantine O'Malley Armstrong, is better known as record producer Rollo, part of the British electronica trio Faithless. Despite their birth names, the pair were known from childhood by the names Dido and Rollo and Dido considers this as her real name, and not simply a stage
Rollo Björn Grímsson, and ""Grim"" – the implied name of Ketill Flatnose's paternal grandfather – was likely cognate with "Gurim". In addition, both Irish and Icelandic sources suggest that Rollo, as a young man, visited or lived in Scotland, where he had a daughter named Cadlinar (Kaðlín; Kathleen). Ketill Flatnose's ancestors were said to have come from Møre – Rollo's ancestral home in the Icelandic sources. Ketill was a common name in Norse societies, as were names like Gurim and Grim. Dudo tells us that Rollo seized Rouen in 876. He is supported by the contemporary chronicler Flodoard, who records that