Which preposition to use with overmantel

by Occurrences 1%

We give an illustration of three designs for chimney-pieces and overmantels by James Gibbs, the centre one of which illustrates the curved or "swan-necked" pediment, which became a favourite ornament about this time, until supplanted by the heavier triangular pediment which came in with "the Georges.

of Occurrences 1%

No other sound broke the stillness of that quiet sunset hour save the solemn ticking of the long, old-fashioned clock at the farther end of the big, book-lined room, with its wide fireplace, great overmantel of carved stone with emblazoned arms, and its three long windows of old stained glass which gave it a somewhat ecclesiastical aspect.

Which preposition to use with  overmantel