Due to the early death of his father Yoshimasa, Masakado returned to his province to find that many of his father's territories had been usurped by his uncles TAIRA no Kunika and TAIRA no Yoshikane, so Masakado used Toyoda, Shimousa Province as a base for extending his power.
良将が早世したため将門が帰郷すると、父の所領の多くが伯父の平国香や叔父の平良兼に横領されてしまっていたといわれ、将門は下総国豊田を本拠にして勢力を培った。