Lefebure is a mystery man of whose antecedents nothing has been ascertained. His wife, Elizabeth Bride, an actress whom he married probably in 1773, had been mistress of John Calcraft (q.v.)
In the year 1784 at the time your Lordship went with Mr. Pitt, I brought in two Members for Wareham, myself, and Mr. Farrer, at that time while I remained in Parliament constantly attended, and voted with Mr. Pitt.
And on 14 Feb. 1806:
For the last eighteen years I have used every exertion in my power, and with the little interest I possess, to support those, that now form the greater part of your Lordship’s Administration ... if you my Lord, should honour me with your notice, it will be ever most gratefully acknowledged.
His date of death has not been ascertained; he was living at Orme House, Northfleet, in 1817.
