Wildcatt does not show RHS awards. Hybrid
registers only show the species;
not clonal names.
The earliest cross with L. tenebrosa I have
been able to find in Wildcatt
is Bl. Helen (B digbyana
x L. tenebrosa) Charlesworth Ltd. 1902
Whether this was the famous L.tenebrosa
'Walton Grange' FCC/RHS, I do not know.
Carl L. Withner, in The Cattleyas And
Their Hybrids, Volume II The Laelias, states
that this particular clone was in the
collection of W. Thompson at Walton Grange
in Stone, Staffordshire.
It received an FCC/RHS on
August 8, 1893
Rita Crothers, in the Sep-Oct 1972 Orchid
Digest, recounts her search of
more than
20 years for the 'Walton Grange'
clone from the W. Thompson collection.
Sorry that I do not have that OD
volume.