Daughter of first Earl of Sandwich. Her arranged marriage is intimately documented by Samuel Pepys .

`A typical but particularly well-document example of ... marriage arrangements , as conducted in conservative aristocratic ... circles, concerns those in 1665 for ... Jemima, ... and Philip, the eldest son of Sir George Carteret. The idea ... was first broached by her mother to ... Pepys... and ... the Sandwich parents decided to go ahead with the plans and authorized Pepys to make the first moves. The object was partly financial but more to cement a politico-administrative alliance, since both fathers were now very high officials in the Admiralty. ... The financial details were rapidly worked out - a marriage portion of £5,000 from Sandwich and a jointure for Jemima, if she were widowed, of £800 a year from Carteret; the approval of the King and of the Duke of York was secured; and the contract was signed and sealed on 5 July. It was not until this moment that Jemima was sent for from the country to be informed what fate her parents had decided for her. The only person bothered by this procedure was her mother, Lady Sandwich, who confided in Pepys her doubts ` whether her daughter will like of it or no, and how troubled she is for fear of it, which I do not fear at all'. Her anxiety seems to have arisen not from doubts about her daughter's happiness, but from the fear of the political damage ... if she unexpectedly turned recalcitrant.

By 15 July... the time had come to introduce the couple... Pepys was put in charge of taking ... Philip... to meet his bride. As a man of the world..., with a winning way with women, whom he was constantly pawing and kissing, he was irritated to discover that he had on his hands a most bashful and tongue-tied young man. So shy was Philip that he did not speak to Jemima or touch her at the introduction or all through dinner. Lord Sandwich suggested leaving the pair alone after dinner ..., but Pepys advised against it; ` lest the lady might be too much surprised'. He was afraid of ... Philip's clumsy bashfulness. When he took Philip off to bed, he asked him how he liked his bride. The young man expressed approval ` but in the dullest, insipid manner that ever lover did'. Next day... Pepys instructed Philip to take Jemima by the hand and lead her ... from church, but he was still too shy to even approach her. Later on that day, the pair were deliberately left alone for two periods of about an hour each in order to get acquainted as best they could. Pepys then took Jemima aside and asked her ` how she liked the gentleman and whether she was under any difficulty concerning him. She blushed and hid her face awhile, but at last I forced her to tell me. She answered that she could readily obey what her father and mother had done, which was all she could say, or I expect.' It was indeed... it already had the approval of the King and his brother... Jemima was trapped, as indeed was Philip... the effort to ascertain her feelings was clearly merely perfunctory. ... Jemima remained solemn and discreet, Philip as shy and tongue-tied as ever. ... On 31 July the pair were married with due pomp... although Pepys found ` the young lady mighty sad', and the wedding dinner a stiff and joyless affair. ... History does not relate how they got on with each other for the rest of their short married life, which lasted until Philip was killed at the battle of Solebay seven years later, leaving his widow with three children.' (Stone).

Sources:
The Family, Sex and Marriage in England 1500-1800, L.Stone.

http://www.montaguemillennium.com/familyresearch/h_1665_jemima.htm