The information in this article is from the fan game King's Quest ZZT and is therefore not canon.
Jerrod Wilson is a guy looking for his brother Jake Wilson on the mountains on the island of Llewdor in King's Quest ZZT. He thought Prince Alexander was his brother. After Alexander explained to him that he was in the World of King's Quest rather than Gold Rush, he left to other lands.
Behind the scenes[]
Jerrod and Jake Wilson are of course cameos\in-jokes reference from the Sierra game Gold Rush. However it should be noted that all throughout King's Quest ZZT, Alexander has an odd way of referring to past events, characters or places, by the name of the game they occured in, so in a way the crossover is slightly more than just a cameo, since it fits into the KQZZT's universe's quirky version of a timeline.