BTW, the problem occurs even if you use Latin Modern Roman and specify:
\setmainfont[Numbers={OldStyle, Proportional}]{Latin Modern Roman} --United in adoration of Jesus,
fr. michael gilmary, mma Most Holy Trinity Monastery 67 Dugway Road Petersham, MA 01366-9725 www.MaroniteMonks.org -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex