While travelling in Switzerland with Lord Cole (later to be 3rd Earl of Enniskillen) they were introduced to Prof. L Agassiz at Neufchâtel, and determined to make a special study of fossil fish.
During the course of fifty years they gradually gathered together two of the largest and finest of private collections—that of Sir Philip Grey Egerton being at Oulton Park, Tarporley, Cheshire.
[2] Egerton was a prominent local dignitary, as Deputy Lieutenant of Cheshire and J.P. for the county.
He is commemorated in the scientific names of the Rusty-fronted barwing (Actinodura egertoni Gould, 1836) and Early Jurassic brittle star fossil, Palaeocoma egertoni (Broderip, 1840),[4] although the latter is now considered a junior synonym of the type species, Palaeocoma milleri (Phillips, 1829).
He married on 8 March 1832, Anna Elizabeth, third daughter of George John Legh and had issue: