[S18812] The Clan MacNab, pg.17.
Alexander married a sister of Sir Alexander Menzies of Weem by whom he had ROBERT (X CHIEF) who married Anne Campbell.
Although "The Clan MacNab" shows Robert as 10th Clan Chief, other records showing succession from the 1st chief to those later than Robert indicate he was 14th chief. However, when people recorded lists of chiefs years after the fact, sometimes chiefs were left out, causing the numbering to vary from compiler to compiler.