London Zoo received a lion x (leopard x jaguar) triple hybrid in 1908 which, I believe, was born in Chicago.
It has been suggested that this museum specimen, although labelled lion x jaguar hybrid, is actually this triple hybrid; unfortunately I don’t know whether or not this is true.
As has been mentioned on another ZooChat thread, there are a pair of jaglions right now in Canada. Since the jaguar parent is melanisitic (black), it is fascinating that one of the jaglion cubs is black and the other is not! Here is the link: