Roger was born in 1637. Roger's father was Arthur Beckwith and his mother was Mary Wyvill. His maternal grandparents were Marmaduke Wyvill and Isabel Gascoigne. He had a brother and three sisters, named Marmaduke, Mary, Isabel and Susan. He was the second oldest of the five children. He died at the age of 63 on December 6th, 1700.