Sono yo yori waga mi no ue wa shirareneba suzuro ni aranu tabine o zo suru - Izumi Shikibu Nikki(English Translation & Meaning)

其夜より我身の上は知れねは
すゝろにあらぬ旅寢をそする

Roma-ji: Sono yo yori waga mi no ue wa shirareneba suzuro ni aranu tabine o zo suru
English Translation: Since that night, I find,
I no longer know myself
or where I may go,
and so it is I spend my nights
in unexpected lodgings
Meaning: Since that night I no longer know what will become of me, and so I find myself sleeping in lodgings I never dreamed of.
Commentary: 33 The Night of the Directional Detour

The day of their exchange about the autumn leaves came to an end. Later, when the prince came and the direction of her house was closed to him, he took her away in the greatest secrecy, as before. At this time he was spending forty-five days avoiding a forbidden direction and was staying at the house of his cousin, the Third-Rank Middle Captain. Since it was an unfamiliar place, she protested that it was unseemly, but he took her there regardless, drew the carriage just as it was into a carriage shed where no one could see, and went inside. She was frightened, but after everyone had gone to sleep the prince came out, got into the carriage, and they talked of everything. Night guards who knew nothing of it made their rounds, while the usual officer of the Right Palace Guards and the page boy stayed close by. Deeply moved, the prince even came to regret his past neglect of her. At daybreak he took her home at once and hurried back before anyone woke.
The woman is Izumi Shikibu, daughter of Ōe no Masamune and, as the wife of Tachibana no Michisada, Governor of Izumi, mother of Koshikibu no Naishi. The Prince of the Dazaifu is Prince Atsumichi, fourth son of Emperor Reizei, so called because he served as Governor-General of the Dazaifu. The Third-Rank Middle Captain refers to a middle captain of the Palace Guards holding the third rank, a cousin of the prince. Avoiding a direction meant moving to another place for the night in order to steer clear of a direction deemed unlucky by the art of yin and yang; here it lasted forty-five days.
The next morning the prince's "Nenuru yo no nezame no yume ni naraite zo fushimi no sato o kesa wa okitsuru" arrived, and Izumi Shikibu sent back this poem.
Why, she thought, should she pretend not to see the prince's deep, almost unworthy devotion and behave so stubbornly? She resolved to go to his residence. Some urged a more serious match upon her, but she would not listen.

The opening lines mean "since that night, my own fate," the night seemingly being the one when she first gave herself to the prince. The third line means "since I cannot know it," a conditional of fact.
The lower verses mean "I find myself in an unexpected lodging," where the adjective means unforeseen or without reason, a "lodging" being a night spent away from home, sealed by an emphatic construction. Answering his night at "Fushimi" with "a lodging away," she looks with astonishment at herself, swept along a course she never imagined; this awareness leads in time to her resolve to move to his residence.
Author: Izumi Shikibu
Source: Izumi Shikibu Nikki
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