Hi. The 0-8-0 s are my favourite and consequently to satisfy a need to visualise the family tree, a few years ago I drew out the attached from Ken Morgan's review in Railway Modeller, October 1969, The L.N.W.R. 0-8-0’s, page 308-310. I thought it might be of interest.
Cheers, Paul
0-8-0 geneology.pdf