I found sum info bout Jaichand
Jaichand was the name of the last ruler of Kannauj belonging to the short-lived Gahadvala dynasty.
Jaichand was the father of Sanyogita, whose Swayamvar with Prithviraj Chauhan is a famous episode detailed in the Prithviraj Raso. Jaichand is also notorious for having sided with Muhammad Ghori against his son-in-law Prithviraj at the First Battle of Tarain (1191). However, Jaichand was not killed by Ghori in the battle of Chandwar (1194 A.D.) (as is represented everywhere by Indian historians). He fled to Kumaon Hills with his entourage (his consorts, his concubines, his children and his coterie). His descendants later established a kingdom in Kumaon Hills. They were always fighting to establish their supremacy with the local tribals known as Khasis (who now reside only in Khasi Hills of Meghalaya in India). Eventually they managed to establish a kingdom in Kumaon Hills of India and later came to be known as 'Chand Rajas'.
In wikepedia it says that it's not reliable, so I'm srry if it's false. But just thought of researching sum stuff bout Jaichand, coz we don't know much.