John married Jean Buchanan. [Group Sheet]
Robert married Anne Campbell. Anne (daughter of Sir John Campbell) died on 06 Sep 1765 in Lochdochart, Scotland. [Group Sheet]
Notes:
The Clan MacNab, by John MacNab of CallandarAnne Campbell, pgs.17 & 21 Sister of the Earl of Breadalbane, and 2nd wife of Robert MacNab, of Bouvain, 10th Clan Chief. (sic)
The Clan MacNab, by John MacNab of CallandarAlexander MacNab, pg.17
Alexander married Baronet Elizabeth Menzies, of Weem. [Group Sheet]
The Clan MacNab, by John MacNab of CallandarElizabeth Menzies of Weem, pg.17 Name: (Sister of Sir Alexander Menzies of Weem)