I found this gem in the packet. The dates are not birth-death dates but dates for their office as Earl or Duke. So, John, the 1st Earl of Lauderdale was the father of John, the Duke of Lauderdale. The duke died without issue, so his brother, Charles became the third Earl of Lauderdale. His son Richard, the 4th Earl died without surviving issue, so his brother John became the 5th Earl. The 6th Earl was his son Charles.
Lonely Alexander on the right was probably the Honorable Alexander Maitland. No substantial title and it is from him that I descend.
Copyright 2010-2017, ACK for Gene Notes