The brother of James Alsop II (A).
| 1776 | 5 Nov. or 5 Dec. The son of Uriah Alsop of St George, Gloucestershire, he was apprenticed to James Alsop I. Friends to find apparel and washing (A, Ao). |
| 1779 | 3 Aug. Isaac Alsop of St James’s parish married Elizabeth Bence of the same parish, spinster, by licence. The bride appears unable to sign her name and where she has made her mark she was referred to as Francis Bence. (JaPR). |
| 1784 | 7 Apr. He obtained his freedom as a potter (F, G). |
| 1784 | Temple parish (P). |