Egerton has been a common first name in my branch of the Ormes but is very rare elsewhere. I'd be very keen to contact other Orme branches who have people called Egerton in it.
I can trace a line of descent to an Egerton Orme & Catharine Orme who were married on 13th April 1758 in Marston-on-Dove, Derbyshire. I have some evidence from the LDS site that Catharine's parent's were Thomas Orme & Alice Eaton also of Marston-on-Dove although she may have come from Duffield, Derbys.
There seems to be another (or the same) Egerton Orme who married a Lettice Stone on 21 Jan 1747 at Lichfield Cathedral, Staffs. There was also an Egerton Orme Stone born about 1746 in Tutbury, Staffs who may have been their illegitimate child before they were married.