What does he mean by "Pray"?

Question

"Can I be so changed? Look at me. Or is it I who am mistaken?--Are you not, sir, Henry Roberts, forwarding merchant, of Wheeling, Pennsylvania? Pray, now, if you use the advertisement of business cards, and happen to have one with you, just look at it, and see whether you are not the man I take you for."

Answer 1

According to the 'Oxford American Dictionary and Language Guide'  c. 1999, pg. 779-

'pray' means to make a devout  supplication (like a prayer) or to entreat, beseech, ask earnestly, or please.  

Please, tell me know-

Please, I beseech you (I ask of you)

Hope this helps.

Answer 2

i think prey is meaning he is the target of whatever

Answer 3

Please.