To pay one's duty

to render homage, as to a sovereign or other superior.

See also: Pay

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
They were both living in my time in Italy, and they were two men whom I should now like very much to have seen, if I could have done so without that futility which seems to attend every effort to pay one's duty to such men.