« … He married, first, Elizabeth Hele, but had children only by his second wife Amy Braithwaite, …. » «… : See the marriage license, November 12, 1719, in Foster, London Marriages.  : Her death is noted in London Magazine, 1769, p. 592. (See her will, proved October 27, 1769, P.C.C. Bogg, 337.) …. » Taken from photocopy of page from original publication - courtesy of Thomas Hamm. Also can be accessed on: Google Books - snippet view
Note: 'London marriage licences, 1521-1869' by Joseph Foster, Joseph Lemuel Chester, John Ward Dean, which does show a number of Cary marriages on its pages 251 and 252 - as may be accessed on-line at: Google Books (and downloaded as a pdf file) - does not, however, show this marriage. Perhaps in a different edition?