kind request for translation help

[ROKUJURO]

Gentlemen,

this NAKAGO has a MEI that I cannot read, and as I have no books on swords, I kindly ask for help. The patina, the shape and the MEKUGI-ANA let me believe that this was a SHIN-SHINTO (or later) blade:

[xiayang]

土肥真了 = Doi Shinryō

[ROKUJURO]

Thank Jan,

that was fast! I thought I could see the HI (from HIGO) and NAO- or ZANE, but I was so very far from it!