Mutations in an intron in MCM6 , a regulatory element for LCT lead to the lactose persistence phenotype \citep{Ingram2008LactosePersistence} (the ability to digest milk into adulthood), and represent one of the clearest signals of recent natural selection in the genome. Lactose persistence has evolved at least twice independently \citep{Bersaglieri2004GeneticGene}, in Europe and in East Africa \citep{Ranciaro2014GeneticAfrica}. Encouragingly, our analysis identifies this Eurasian haplotype, despite the SNP set not containing the ‘European’ lactase variant (13910 C\(>\)T polymorphism, rs4988235; Supplementary Fig. \ref{fig:suppfulalct}) and suggests that the European haplotype has entered the Fula as a result of gene-flow from Europe approximately 2kya. In both this case and that of DARC described above, our ancestry based analysis provides new insight into the potential origins of selected mutations.