Middle Name For Bear

Hello, we will soon have a son named Bear and I am struggling with middle names for him. Some family names are : Edwin, Richard, William, Douglas, Jack, and James. I am not 100% set on any particular family name and his middle name does not have to be a family name at all. I just want something that flows nicely after Bear. We are even okay with doing two middle names if it sounds nice. Any advice is welcome. Thanks!