Jackamar was the husband of an unnamed woman and Lessy's grandfather.
Unbeknownst to his wife, he had several lovers on the side but this all came to an end when he was killed in a battle in Rinde sometime around the 1190s. He was then buried in the cemetery near Blackbough.
Shortly before his wife died, she learned about his infidelity and decided she didn't want to be buried beside him. However, many years later as a ghost she changed her mind and, if Geralt agreed to help her, she'll ask him to place her wedding ring on Jackamar's grave so they can be together again.