Courtesy of the David Vance SAPP process.

Dave Vance Named FamilyTreeDNA General Manager
www.jdvsite.com - The SAPP algorithm
0---Node# 687: Est. TMRCA: 20 generations or 560 years ago (1390 AD)
        1---B298232 John McGuire 1848 Ireland: Est. TMRCA: recent.
        1---42430 James Plunkett 1780-1842 Fermanagh Ireland: Map Unknown, 67 STRs FTDNA Known SNP: M269 Est. TMRCA: recent. Kit is courtesy of the FTDNA Ireland Project.

Note: Dates are measured from the epoch which is 1950 and age estimates vary by 15% to 20%. The few red colored ages (on the SNPs) and the green age at the top is Family Tree DNA's eatimate for the SNP itself. The green in-line ages are the SAPP estimate for the kits being analyzed (not the SNP).