Dear Paul, I asked you in a recent post whether Somerled was mythical and, if not, whether McDonald¹s or other pedigrees leading back to Somerled could be investigated for generations/century. This question would also be relevant for pedigrees going back to other figures of this period (800-1200) such as Kenneth McAlpin or the McKenzie earls in Scotland or any other well known figures. Can you or others find any good pedigrees and measure generation time over the last 800-1200 years? The generations/century for the Ceneil Eoghain ending with Muirchertach is 3 generations/ century using the generally accepted pedigree. Is this true for other branches of the UI Niall? Most people in our forum have pedigrees going back to the mid 1700s. What are the generation times for these? It would be very useful for the understanding of our heritage if we had a good consensus on this number. David