John Sinclair of Toab - Evidence of parentage of John Sinclair of Toab

Clan MacFarlane Genealogy has incorrectly identified John Sinclair of Toab as the son of John Sinclair and Margaret Ballantyne [http://www.clanmacfarlanegenealogy.info/genealogy/TNGWebsite/getper... Clan MacFarlane and associated clans genealogy]
unfortunately this was followed by the original creator of this profile. However, it now appears that he is the son of Magnus Sinclair in Skaill. This is confirmed by the abridged transcript which follows:

17 May 1580: Instrument of Resignation and Sasine under the hand of William Fermoir, notary public narrating that '''Magnus Sinclair in Skaill''' within the close of the Yairdis in the town of Kirkwall, for fulfilling of the '''Contract of Marriage between Johne Sinclair, his eldest son and Marie Stweartt, brother's daughter to Lord Robertt Stewartt feaur of Orknay and Zetland''' resigned to said lord, as superior, all his heritable lands as well conquest as pertaining to him of old heritage, either in Orknay or Zetland whereupon said Lord 'dimittit' same in the hands of said Johne and Marie to be 'bruikit' by them and the survivor of them in conjunct fee, and after their decease to the heirs gotten between them, whom failing, said Johne's heirs and assignees whomsoever in heritage, for yearly payment to the king and kirk of scatt and teind as use is. And therefore, by virtue of said Lord's precept directed to Johnne Langskaill and William Aitkin, bailies in that part, said John Langskaill passed to the lands of Tohop lying in Sanct Androis parish, and said William passed to the lands of Brabester within the parish of Deirnes both within the 'Manelnad of Orkney'; and there gave Sasine of said lands to said Johne Sinclair accordingly. Witnesses, Magnus Tailyeour, Magnus Smiyth, Nyniane Smyth, Henre Smyth, Magnus Prence, Magnus Paplay. [http://catalogue.nrscotland.gov.uk/nrsonlinecatalogue/details.aspx?... National Records of Scotland, Register House charters, 1st series, reference RH6/2550]

Fiona's Finding Service agrees with this identification [http://www.fionamsinclair.co.uk/genealogy/Isles/Tohop.htm Fiona's Finding Service: The Sinclairs of Tohop and Saba]