The son of Daniel Mearn I and the brother of Daniel Mearn II (RPR).
| 1742 | 25 Jul. Joseph, son of Daniel I and Pricilla Mearn, baptised (RPR). |
| 1758 | 6 Feb or 6 Mar. He was apprenticed to John and Susannah Harwell. Friends to find apparel (A, Ao). |
| 1774 | 29 Oct. He became a free potter (F, G). |
| 1774 & 1781 | Potter, Lambeth (P). |