Which preposition to use with unexampled

in Occurrences 10%

Wealth incomparable, scientific achievements unexampled in their number and magnitude, facile means of swift intercommunication between peoples, have all worked together towards an earthly realization of the early nineteenth-century dream of proximate and unescapable millennium.

in Occurrences 5%

But the House of Lorraine-Hapsburg is unexampled in the compass of its perjuries, and has committed every one of these crimes against the nation.

among Occurrences 2%

We gall them in a tenfold chain, with an unrelenting spirit of barbarity, inconceivable to all but the spectators of it, unexampled among former and other nations, and unrecorded even in the bloody registers of heathen persecution.

Which preposition to use with  unexampled