Was Erwin II of Gleichen father of an Engelbrecht, died 1208

[gj01777]

I wonder if Count Erwin II of Gleichen, did have a son Engelbrecht or
Engelbert who died 1208 at the battle of Lena in Sweden, He could be
the Brother of Lambert II. and Ernst III.?

Sincerely Yours:

Allan Martens Andersen.