Belive them of all his untiring young dames

• "Believe Me, if All Those Endearing Young Charms": an 1891 song, popular in Ireland and the United STates, written by Thomas Moore.

The opening lyrics are as follows:

   Believe me, if all those endearing young charms,
   Which I gaze on so fondly today,
   Were to change by tomorrow and fleet in my arms,
   Like fairy gifts fading away,

• belive: forthwith; speedily; quickly