Probably these blocks formed the floor of a balcony, a tawdry marble addition.
St Audrey was St Etheldreda, who founded Ely cathedral, and it is generally accepted that tawdry-laces or tawdries were necklaces bought at St Audrey's Fair on the 17th of October.
TAWDRY, an adjective used to characterize cheap finery, and especially things which imitate in a cheap way that which is rich or costly, or adornments of which the freshness and elegance have worn off.
The word is first used in combination in the phrase "tawdry lace," a shortened form or corruption of St Audrey's or St Awdrey's lace.
He therefore adapts himself to his circumstances, and, using the mould rather than the chisel, produces specimens which show tawdry handsomeness and are attractively cheap. It must be admitted, however, that even though foreign appreciative faculty were sufficiently educated, the Japanese artist in metals would still labor under the great difficulty of devising shapes to take the place of those which Europe and America have learned to consider classical.