His sense of the need for the Divine Feminine grew and once Lawrence had learned to read the ancient text of the Old Testament in the original Hebrew, he found that the term for the creator god was not masculine, it was feminine, and it was not singular, it was plural. He experienced an influx of Goddess energy for the first time in 1966. His spiritual convictions led him to start writing about the Goddess as early as 1970, to receive the priesthood of Isis in 1972, and to help found the Fellowship of Isis in 1976. In 1981 Lawrence made over, by Deed of Gift, a series of shrines dedicated to the Goddess which are situated in the lower level of Clonegal Castle, and collectively formed as a temple. Lawrence was the FOI co-founder who introduced the concept of the importance of ritual, and was instrumental in impressing this upon his sister, Olivia, which provided impetus for creating the FOI Liturgy.

Lawrence Durdin-Robertson left this earth August 4, 1994. His obituaries in mainstream newspapers dealt seriously with his life’s work promoting the Religion of the Goddess, acknowledging him as a major figure in the religious field. Members of the Fellowship of Isis and members of the Goddess Community in general recognize the valuable contributions he made as a scholar in the field of Goddess research, which was published by his private press at Clonegal Castle, Cesara Publications. His work took the form of reference materials carefully compiled into encyclopedic form using original quotations rather than his own interpretations of them. Many writers and researchers have found that his works form the basis of their private libraries. References to some of the more obscure deities are to be found in his works and difficult to locate elsewhere.

Pamela Mary (Barclay) Durdin-Robertson was born in 1923. She was the only daughter of Major and Mrs. Maurice Edward Barclay of Brent Pelham Hall, Buntingford, Hertfordshire. Her family’s religious background was Quaker, she is descended from the famous Robert Barclay who wrote “An Apology for the True Christian Divinity” in the late seventeenth century. This work supports and defends the founding principles of the Quaker faith and is still in print.

Another famous relative was the prison reformer known as "The Angel of Newgate," Elizabeth Gurney Fry, whose mother Catherine, was a member of the Barclay family. Both of these distinguished Quakers wrote of spiritual experiences with the Inner Light. Elizabeth stated in her memoirs: "... suddenly my mind felt clothed with light, as with a garment ..."

Pamela was the FOI co-founder who insisted upon the equality of all beings within the Fellowship of Isis. She was a mystic and an empath, whose sensitivities focused primarily on the powers of nature and animal spirits. Like her famous ancestor and her famous relative, she believed that an Inner Light was the guiding force of all life. She had mystical experiences with ‘plant spirits’ which some might call nature devas. As her attunement with nature grew, so did her rapport with plants, flowers and trees.

Today, it is common knowledge that plants respond to our thoughts, to colored light and to music. Pamela intuitively knew this before it was common knowledge, and she would occasionally communicate with nature spirits. However, the majority of her attunement was with the plants, flowers and trees themselves. She had a special sensitivity to wild flowers in particular. Olivia felt that Pamela could communicate with flowers so easily because she lived so much in the present moment, and because Pamela never questioned the reality or validity of her sensitivity, it was simply a natural part of her being, and of her everyday life. Of Pamela Durdin-Robertson it could truly be said: "Every flower was a word, a thought. The grass was speech; the trees were speech; the waters were speech; the winds were speech...and I listened with my whole being." (*)

Trees, flowers, people and animals are in reality a part of one’s self. When one operates on a psychic level, as Pamela did, harmony and the connectedness to all other forms of life is understood. Pamela, along with Lawrence felt the necessity of naming their Fellowship after a Goddess, and the launching of the Fellowship of Isis provided important impetus to the early Goddess movement.

Pamela is referred to as 'Valentine' in "The Call of Isis," she was called "Poppy" by friends and family. Those who were privileged to know her have remarked on the sweet gentleness of her temperment. She was renowned for her love and care towards both human beings and animals. One of her most beloved animal companions was a pony which sometimes was hitched to a trap in which she used to ride through the village of Brent Pelham as a girl. Lawrence dedicated two of his books "The Goddesses of Chaldea, Syria and Egypt" and "The Goddesses of India, Tibet, China and Japan" specifically to her.

Lawrence and Pamela were married in 1948 and had three daughters, Melian, Anna and Lucy, and one son, David, who is the present Baron of Strathloch. After nearly forty years of marriage and a lifetime devoted to family and community service, Pamela Durdin-Robertson passed away in 1987.