Jacobus is in Coins.
Jacobus. A gold coin of the value of twenty-five shillings, called after James I, in whose reign it was first coined.
Diary of Samuel Pepys 23 November 1662. 23 Nov 1662. Lord's Day. Up, after some talk with my wife, soberly, upon yesterday's difference, and made good friends, and to church to hear Mr. Mills, and so home, and Mr. Moore and my brother Tom (28) dined with me. My wife not being well to-day did not rise. In the afternoon to church again, and heard drowsy Mr. Graves, and so to see Sir W. Pen (41), who continues ill in bed, but grows better and better every day.
Thence to Sir W. Batten's (61), and there staid awhile and heard how Sir R. Ford's (48) daughter is married to a fellow without friends' consent, and the match carried on and made up at Will Griffin's, our doorkeeper's.
So to my office and did a little business, and so home and to bed. I talked to my brother to-day, who desires me to give him leave to look after his mistress still; and he will not have me put to any trouble or obligation in it, which I did give him leave to do. I hear to-day how old rich Audley is lately dead, and left a very great estate, and made a great many poor familys rich, not all to one. Among others, one Davis, my old schoolfellow at Paul's, and since a bookseller in Paul's Church Yard: and it seems do forgive one man £60,000 which he had wronged him of, but names not his name; but it is well known to be the scrivener in Fleet Street, at whose house he lodged. There is also this week dead a poulterer, in Gracious Street, which was thought rich, but not so rich, that hath left £800 per annum, taken in other men's names, and 40,000 Jacobs1 in gold.
Note 1. A jacobus was a gold coin of the value of twenty-five shillings, called after James I, in whose reign it was first coined.