Bizarro! Sounds like a deliberate intent to mislead the court system, on the part of the same-named-guy. I wonder if it’s an offense of some sort to give deliberately-incorrect info?
How does that county get its juror pool? It seems like a lot of them go via the driver’s license lists.
You might want to keep an eye on your husband’s credit reports in case this fellow is pulling any other stunts.
Is the county going to contact this juror via other means? have they removed your husband’s email from their files?