The only uncertainty of the line from Crinan to Robert Rioch Duncanson (relative given in Robison-Blythe genealogy for Robertson of Struan), according to Gordon MacGregor, is the descent from Madach of Clunes to Andrew de Atholia. There is a break of a generation/s. Great grandfather Duncan who died 1355-1357 was ancestor of Robert Rioch Duncanson and grandfather of first Reid, Alexander Robertson (first proclaimed Reid 'Ruaidh'). Just follow me and I'm using guesstimates: Crinan died 1045 AD Duncan died 1040 AD Mael Muire appointed Mormear of Atholl 1100 AD Madach died 1145 Ad Malcom 2nd Earl of Atholl m 1165 to Hextilda Duncan 3rd son of Malcolm 2nd Earl of Atholl m. say 1195 (guesstimate) Madach of Clunes witness to charter in 1240 born say 1200 lets say lived 1270? Guesstimate Generation by generation descent from Madach to Andrew uncertain ---------------------- Andrew de Atholia ??????????? who was his father? Duncan de Atholia son of Andrew died 1355-1357 AD This Duncan father of Patrick Duncanson 1st Lude (father of Alexander Robertson who started Reid line of Strathloch) and present Clan Chief's line of Robert de Atholia Robert de Atholia in battle of Methven in 1306 had charter for lands 1362 Duncan de Atholia Robert Rioch Duncanson of Struan ( Clan Chief off his line in Robison & Blythe) died 1459