With a lineage with a history worth about 200 years, they were once Hidden Christians that lived inside a then foreigners-intolerant Japan. Their first head, Nagato Tohsaka, was considered the least promising of Zelretch's pupils. But by six generations after, the time of Rin and Sakura, the family had improved to the point of reaching the second place. They possess good connections in both the Mage's Association, due to their relationship with Zelretch, and the Holy Church, thanks to their faith.
The Tohsaka are experts in the use of Jewel Magecraft and a secret style of Chinese kenpo, the latter due to Nagato's emphasis in the training of not only Magecraft, but also martial arts. Thanks to the sudden and relatively recent progress of their mastery of Jewel Magecraft, as well as the introduction of the Gandr into their magical repertory, it is believed that the Tohsaka lineage was able to incorporate the Edelfelts' knowledge of Magecraft into their own through the younger Edelfelt twin that was supposedly defeated during the Third Heaven's Feel, for the members of that family (such as Luvia) are well known for being very capable in the use of both. It is unknown if the Tohsaka gained the abilities from the Edelfelt twin marrying with the head of the Tohsaka family of that time or simply by having her Magic Crest stolen.
Back when the Tohsaka were developing the ritual of the Heaven's Feel along with the Makiri and the Einzbern, Nagato's daughter played a greater role in the completion of the Holy Grail War system than her father. The Tohsaka role in the Heaven's Feel is to provide the use of their spiritual land to the ritual.
It is known that one of Tokiomi's parents was a foreigner.
In the Apocrypha world, the Tohsaka gave up on the Holy Grail and searched for another method to reach the Root in Fuyuki. They now seek a new path in becoming one with the universe with Chinese Kenpou while learning magecraft.
In the EXTRA universe, the Tohsaka family was mostly destroyed in the 1990s.
- Nagato Tohsaka
- Tokiomi Tohsaka
- Aoi Tohsaka (Married into the family)
- Rin Tohsaka
- Rin Tohsaka (Fate/kaleid liner PRISMA☆ILLYA world)
- Sakura Matou (Born as Sakura Tohsaka, later given away to be adopted by the Matou family)
- Rin Tohsaka (Relative of Rin Tohsaka in the Fate/Extra world)
 Fate/Apocrypha material - Encyclopedia: The Three Families [Others], p.166 [T]
The Three Families [Others]
In “Apocrypha”, the Three Families are the magi who constructed the Fuyuki Holy Grail War… in other words, the Einzberns, Tohsaka and Makiri.
Just as alluded in the light novels, Makiri (Matou) Zouken fought fiercely against Darnic during the Third Holy Grail War, but became practically crippled due to the shock of the Greater Grail being stolen. The family wasn’t blessed with a successor either, so their future as magi has been completely shut.
The Tohsaka gave up on the Greater Grail, and now seek a new path in becoming one with the universe with Chinese Kenpou while learning magecraft. The twin-tail daughter of the family might also end up becoming the founder of a “completely new martial arts that combines magecraft and Chinse Kenpou” by the time she becomes a high school student. However, she never imagined that her younger sister who was adopted by distant relatives would come visit her in Japan after becoming a pro-wrestler with unimaginably nice proportions and forming a tag team with a drill-roll-haired girl…!
The Einzberns are in the midst of struggling to make a new Greater Grail under the excuse “It was stolen, so we’ll just make a new Holy Grail”. Fortunately, in the “Apocrypha” world, a certain dead fish-eyed mercenary won’t end up becoming involved with the Einzberns, so their greatest work Illyasviel will never be born—therefore, as long as she isn’t born, the Einzberns will never despair… Is that really fortunate?