Like Kepler and all his contemporaries he believed in astrology, and he certainly also had some faith in the power of magic, for there is extant a deed written in his own handwriting containing a contract between himself and Robert Logan of Restalrig, a turbulent baron of desperate character, by which Napier undertakes "to serche and sik out, and be al craft and ingyne that he dow, to tempt, trye, and find out" some buried treasure supposed to be hidden in Logan's fortress at Fastcastle, in consideration of receiving one-third part of the treasure found by his aid.
He took part in the defence of Edinburgh, and in the battles of Langside (1568) and Restalrig (1571).
He had stoutly opposed the marriage of Mary with Darnley, and when, after Restalrig, he was captured by the queen's troops, he narrowly escaped execution.
Tramways connect the different parts of the city with Leith, Newhaven, Portobello and Joppa; and the Suburban railway, starting from Waverley station, returns by way of Restalrig, Portobello, Duddingston, Morningside and Haymarket.
This embraced portions of South Leith parish (landward) and of Duddingston parish, including the village of Restalrig and the ground lying on both sides of the main road from Edinburgh to Portobello; and also part of Cramond parish, in which is contained the village and harbour of Granton.
The most probable explanation is that Gowrie laid, with the utmost secrecy, a plot to lure James to Perth, kidnap him there, transport him to Fastcastle, a fortress of the profligate and intriguing Logan of Restalrig, on the Berwickshire coast, and then raise the Presby- terian party.