Robert DeAtholia & Margaret Stewart 
They had a son named Alexander.
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Children
5th Baron of Strowan Alexander Robertson
Alexander was born in 1466 in Strowan, Perthshire, Scotland.2 He died at the age of 42 in 1508 in Strowan, Perthshire, Scotland.2
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=wandawalls&id=P3143&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=wandawalls&id=P3137&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=wandawalls&id=P3137&style=TABLE