Thomas Sydserf(f), or St. Serf, (1581 – 1663) was a Scottish minister of the Church of Scotland who served as Protestant Bishop first of Brechin, then Galloway and finally Orkney.
[1] However, in the same year, and on the recommendation of William Laud, Archbishop of Canterbury, he ascended to episcopal rank, receiving consecration as Bishop of Brechin on 29 July.
These views brought him much conflict in Scotland, and as Bishop of Galloway, he exercised his episcopal powers against his ideological opponents.
He supported the introduction in 1637 of an English-style Book of Common Prayer, and for this, he was attacked on several occasions by mobs in Falkirk, Dalkeith and Edinburgh.
His willingness to ordain as a clergyman anyone who asked him attracted much criticism, a fact recorded by Samuel Pepys in his famous diary.