Morrisson v Robertson 1907 CSIH 11, 1908 SC 332 is Scots contract law case establishing the common law principles that govern unilateral error.
[1] Alexander Telford, pretending to be the son and agent of James Wilson, approached Robert Morrisson to purchase two cows.
Morrison subsequently found out that Telford had been a rogue and was not related to Wilson.
Morrisson petitioned a Sheriff court to recover the two cows from Robertson.
Accordingly, Telford had no rights which he could pass on to Robertson, so Morrisson was entitled to recover his cows.