Imci Pana meaning

Hello, I am currently researching several older Polish sources and have come across the phrase "imci pana" when describing someone . I have not been able to find any difinitive explanation to what this means. Is there anyone who knows what it means ?

It must be old Polish and it means Sir or dear Sir.

imć

an abbreviation 'jego miłość' (his love) formerly used as a polite expression, mostly before a last name or title

imć pan (very roughly) 'your most honorable lord'

imci pana the same but in the genitive/accusative case

"skrót zwrotu jego miłość, używany dawniej jako wyrażenie grzecznościowe, przeważnie przed nazwiskiem lub tytułem
Imć wojewoda.. ."

sjp.pl/im%C4%8

Is it related to "mocium panie"?

Not necessarily, "mocium panie" was Fredro's idea.