Anchel Oppenheimer - missing generation?

seems like here is a generation missing. Anchel, born abt 1450 can hardly be the son of Loew Juda because he died already abt. 1445, age of appr. 65.
OK, Edel, his mother, could be very young and therefore could be the mother of Anchel, but this would at least require that Loew Juda was alive till 1450 or longer.
Any sources available to narrow down this issue?