Her journal records her poetry, her disastrous marriage and the loss of a fortune in an economic French bubble scheme.

Thomas was said to be the son of "Sir James Pennyman" and she had £2,000 but this did not save the marriage.

By 1720 she was in Paris trying to gain some benefit for the stock she bought in the Mississippi scheme.

She recorded Catholic ceremonies and notes that she saw Louis XV at church.

[2] Her "Miscellanies in Prose and Verse, by the Honourable Lady Margaret Pennyman" was published in 1739[4] by Edmund Curll noting she had died penniless.