My first aikido teacher was Tom Moss who's lineage was from Murashige sensei via Thielemans sensei, you could try contacting Tony Thielemans here... http://www.yamaarashi.be/
You might also try and contact Georges Stobbaerts as he was also in Belgium with Murashige sensei - http://www.tenchi-international.com/
I'm not sure but isn't Morihiko Murashige related?
Happy New Year to All.
Murashige Sensei [the father ] has two sons living in U.S.A.
I know them both. Mark/Morihiko Murashige 6th Dan Shihan trained /trains in San Diego.He is a excellent aikidoka. Last time saw him was in 2008 in San Diego when Doshu was visiting the U.S.A.