To man a lady was, in former times, a phrase similar to the vulgar one at present in use, to squire.
1812, Henry [William] Weber, “The Spanish Curate”, in [John Fletcher, Philip Massinger], edited by Henry Weber, The Works of Beaumont and Fletcher, […], volume III, Edinburgh: […] James Ballantyne and Company, for F. C. and J. Rivington; [et al.], Act IV, scene vii, footnote 3, page 326