How could the Fields Family Project have four haplotypes and still be related?

[jfields]

A man with the marker M89 is possibly the ancestor of all four---I, R, E and J.  Today we would call the owner of marker M89 haplotype F, not necessarily so then.  M89 could have sired one son with his usual M89 and a second son with the mutation m170.  The descendants of m170, with additional mutations would form the I haplotype (two haplotypes in the same family).  Or, the second son could have had the mutation m207 which would be the beginning of the R haplotype or m267 forming the J haplotype.  Haplotype E also originates with the M89 group of men.  With time the different haplotypes may have migrated together or parted ways.  Today some are common in northern France and scandinavian countries, the fertile crescent, North Africa and the mediterranian.  The last Ice Age ended many lines and scattered populations.  Many of these lines of descent may have been part of the great Celtic migrations of the first millennium.