Financial problems
A few years after her marriage, she and her husband's brother, Sir Charles Cavendish, returned to England. Cavendish had heard that her husband's estate, sequestrated due to his being a royalist delinquent, would be sold and that she as his wife could hope to benefit from the sale. In the event she received no benefit. She noted that while many women petitioned for funds, she herself only did so once, and being denied decided such efforts were not worth the trouble. After a year and a half she left England to be with her husband again.
Character and health
Cavendish stated in A True Relation of My Birth, Breeding, and Life that her bashful nature, which she described as "melancholia", made her "repent my going from home to see the World abroad." It manifested itself in reluctance to discuss her work in public, but this she satirised in her writing.[19] Cavendish defined and sought self-cures for the physical manifestations of her melancholia, which included "chill paleness", inability to speak, and erratic gestures.[20]
Religious beliefs
Cavendish's views on God and religion remained ambiguous. Her writings show her as a Christian, but she did not often address the matter. In her Physical Opinions, she explicitly stated her belief in the existence of God – "Pray account me not an Atheist, but believe as I do in God Almighty,"[21] – but sought to split philosophy from theology and so avoid debating God's actions in many of her philosophical works.
Her theological temerity was unusual at a time when much women's writing was built around religion. Although Cavendish acknowledged God's existence, she held "that natural reason cannot perceive or have an idea of an immaterial being." So "when we name God, we name an Inexpressible, and Incomprehensible Being."[3] Still, she believed that all parts of nature have an innate knowledge of God's existence. Even inanimate matter, she argues, "also have an interior, fixt and innate knowledge of the existency of God, as, that he is to be adored and worshipped. And thus the inanimate part may, after its own manner, worship and adore God."[22]
Fashion and fame
Monument to William & Margaret Cavendish, Westminster AbbeyCavendish in her memoir explained her enjoyment in reinventing herself through fashion. She said she aimed at uniqueness in dress, thoughts and behaviour, and disliked wearing the same fashions as other women. She also made her desire for fame public. Several passages remark on her virtuous character: while acknowledging goodness in others, she thought it acceptable to hope to better them and even achieve everlasting fame.
She expected to be criticised for deciding to write a memoir, but retorted that it was written for herself, not for delight, to give later generations a true account of her lineage and life. She noted that others, such as Caesar and Ovid, had done the same.
Death
She died in London, and was buried in Westminster Abbey on 7 January 1674. Her husband arranged for a monument, by the sculptor Grinling Gibbons, to be erected in the north transept of the abbey.[23] The epitaph reads: "Her name was Margaret Lucas youngest daughter of Lord Lucas, earl of Colchester, a noble family, for all the brothers were valiant, and all the sisters virtuous".[24] All the Brothers Were Valiant became the title of a novel and number of film adaptations in the early 20th century.