Is Eleanor de Beaumont d/o 2nd Earl?

Correct. I have tried to elucidate the ancestry of Eleanor de Beaumont, and I likewise have found no evidence that she is a daughter of Robert de Beaumont-le-Roger, Comte de Meulan, 1st Earl of Leicester. If this connection is valid, the her lineage can be traced back to Charlemagne. In my own lineage I have seen about six alternative lineages that claim descent from Charlemagne, but with every single one, one link in the chain becomes unstuck in exactly the same way. I cannot claim an ancestor without provenance. Those posting ancestors should provide cast iron provenance otherwise the linages posted have no more validity than that of Frodo Baggins.

 I live within walknig distance of Dunham Massey

These might help.

Mike Nevell (1997). The Archaeology of Trafford. Trafford Metropolitan Borough with University of Manchester Archaeological Unit. p. 27. ISBN 1-870695-25-9.

^ Thomas Christopher Banks, The Dormant and Extinct Baronage of England (1807:206): "6. Massey, or Dunham Massey"

Sir Robert de Beaumont, Knight, Earl of Leicester, Justiciar of England is your 27th great grandfather.
Hamon II de Massey, Baron of Dunham Massey is your second cousin 26 times removed
Robert de Beaumont-le-Roger, Comte de Meulan, 1st Earl of Leicester is your 28th great grandfather.

Robert de Beaumont-le-Roger, Comte de Meulan, 1st Earl of Leicester is your 25th great grandfather.
Descendant & Researcher, S.R. Smith

Sir Robert de Beaumont, Knight, Earl of Leicester, Justiciar of England is your 25th great uncle.
Relative & Researcher, S.R. Smith