here is the story of Titus Valerius
https://en.uesp.net/wiki/Online:Titus_Valerius
it seems it was the Celestial Warrior that had a hand in his time travelling.
Aramithius wrote: »We do encounter Thaddeus Cosma in Nchuthnkarst in Blackreach, indicating that controlled time travel is possible in The Elder Scrolls, but it's beyond our current understanding as to how he does it, or when time travel magitech gets developed. We also have The Dragon Break Re-Examined, which feels like it's from another time. But we know so little about it that we don't have a lot of info to build such a character's background on.
I think it would be particularly unreliable if you were to try to use dragon breaks to do it. They're not like "time wormholes", but instead suspensions of causality altogether. There's nothing to indicate that you could use them to travel through time; the Time Wound that was created when Alduin was sent into the future is sometimes likened to a dragon break, but I'm not convinced about that.
The_Drop_Bear wrote: »Dragon break Re-Examined was wrote by a character called Fal Droon, which is an anagram of Darn Fool. The book is also evidently wrong in a few places.
The late 3rd era was a period of remarkable religious ferment and creativity. The upheavals of the reign of Uriel VII were only the outward signs of the historical forces that would eventually lead to the fall of the Septim Dynasty.
Aramithius wrote: »There's nothing to indicate that you could use them to travel through time; the Time Wound that was created when Alduin was sent into the future is sometimes likened to a dragon break, but I'm not convinced about that.