Bertrand Arthur William Russell, 3rd Earl Russell,  (; 18 May 1872 - 2 February 1970) was a British philosopher, logician, mathematician, historian, writer, social critic, political activist and Nobel laureate. At various points in his life, Russell considered himself a liberal, a socialist and a pacifist, but he also admitted that he had "never been any of these things, in any profound sense". Russell was born in Monmouthshire into one of the most prominent aristocratic families in the United Kingdom. In the early 20th century, Russell led the British "revolt against idealism".

Russell had two siblings: brother Frank (nearly seven years older than Bertrand), and sister Rachel (four years older). In June 1874 Russell's mother died of diphtheria, followed shortly by Rachel's death. In January 1876, his father died of bronchitis following a long period of depression. Frank and Bertrand were placed in the care of their staunchly Victorian paternal grandparents, who lived at Pembroke Lodge in Richmond Park. His grandfather, former Prime Minister Earl Russell, died in 1878, and was remembered by Russell as a kindly old man in a wheelchair. His grandmother, the Countess Russell (nee Lady Frances Elliot), was the dominant family figure for the rest of Russell's childhood and youth.  The countess was from a Scottish Presbyterian family, and successfully petitioned the Court of Chancery to set aside a provision in Amberley's will requiring the children to be raised as agnostics. Despite her religious conservatism, she held progressive views in other areas (accepting Darwinism and supporting Irish Home Rule), and her influence on Bertrand Russell's outlook on social justice and standing up for principle remained with him throughout his life. (One could challenge the view that Bertrand stood up for his principles, based on his own well-known quotation: "I would never die for my beliefs because I might be wrong".) Her favourite Bible verse, 'Thou shalt not follow a multitude to do evil' (Exodus 23:2), became his motto. The atmosphere at Pembroke Lodge was one of frequent prayer, emotional repression, and formality; Frank reacted to this with open rebellion, but the young Bertrand learned to hide his feelings.  Russell's adolescence was very lonely, and he often contemplated suicide. He remarked in his autobiography that his keenest interests were in religion and mathematics, and that only his wish to know more mathematics kept him from suicide. He was educated at home by a series of tutors. When Russell was eleven years old, his brother Frank introduced him to the work of Euclid, which transformed his life.  During these formative years he also discovered the works of Percy Bysshe Shelley. In his autobiography, he writes: "I spent all my spare time reading him, and learning him by heart, knowing no one to whom I could speak of what I thought or felt, I used to reflect how wonderful it would have been to know Shelley, and to wonder whether I should meet any live human being with whom I should feel so much sympathy". Russell claimed that beginning at age 15, he spent considerable time thinking about the validity of Christian religious dogma, which he found very unconvincing. At this age, he came to the conclusion that there is no free will and, two years later, that there is no life after death. Finally, at the age of 18, after reading Mill's "Autobiography", he abandoned the "First Cause" argument and became an atheist.

Using a quote from the above article, answer the following question: who were his parents?
). In June 1874 Russell's mother died of diphtheria, followed shortly by Rachel's death. In January 1876, his father died of bronchitis