matron of honour
noun plural matrons of honour
a married woman serving as chief attendant to a brideCompare bridesmaid, maid of honour
a married woman, usually a member of the nobility, who attends a queen or princess
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Examples from the Web for matron of honour
Historical Examples of matron of honour
And you want me to act as matron-of-honour at that very informal little wedding.
A Woman of the WorldElla Wheeler Wilcox