When Eliza Jumel divorced Aaron Burr, she was represented in their divorce trial by Alexander Hamilton Jr., 30 years after Burr killed Hamilton Sr.
"Excuse me, are you Aaron Burr, sir?"
"Depends, who's asking?"
"You've been served, sir."
h/t: https://www.reddit.com/r/todayilearned/comments/hsdmwl/til_aaron_burrs_2nd_wife_was_represented_in_their/fya8htw/