Well Jim, you know even less than Wikipedia then. There are two more recent (than Dolan) books on Leitrim, by Fiona Slevin in 2006 and A.P.W. Malcolmson in 2008. Undoubtedly both would have counted Dolan's research amongst their sources. As they dates are so close whether they were aware of each other is unclear. There is a third, broader from the title, book by Mary Lydon Simonsen in 2017, although Mary Lydon Simonsen is mostly a writer of fiction.