Under-sec. of state July 1660–74; keeper of state pprs. 1661–d.; commr. prohibited goods 1663, lotteries 1665, postmaster-gen. 1667–85; clerk of PC 1672–4; plenip. to congress of Cologne 1673–4, Ryswick 1697; sec. of state (northern dept.) 1674–9; ld. of Admiralty 1674–9; PC 11 Sept. 1674–Apr. 1679, 16 Nov. 1696–d.; PC [I] 1681–5, 1694–d.; ambassador extraordinary at The Hague 1697–9.
FRS 1663, pres. 1677–80.
Asst. R. Adventurers into Africa 1664–8, 1670–2, R. African Co. 1673, 1675–7; member Clothworkers’ Co. by 1675, master 1676; asst. ?by 1685–7; member, R. Fisheries Co. 1677; asst. sons of the clergy 1678, steward 1680; gov. St. Bartholomew’s Hosp. by 1686, St. Bees Sch. 1687.
Recorder, Thetford 1682; freeman, Rochester 1683, Dublin 1695; asst. Rochester bridge 1685–d., warden 1686, 1693, 1700; high steward, Gravesend 1686.
MP [I] 1692–9.
WILLIAMSON, Sir Joseph (1633-1701)
