Family E is a textual group of the New Testament manuscripts. It belongs to the Byzantine text-type as one of its textual families, it is one of the primary early families of the Byzantine text-type. The name of the family came from the symbol of Codex Basilensis, the lead manuscript of the family, which is designated by symbol E (von Soden's Ki).
Hermann von Soden discovered the family and designated it with symbol Ki. According to him it is one of the earliest families of the Byzantine text-type, it is a result of recension made by Lucian of Antioch. To this family Soden included, as the leading members of it, manuscripts: Codex Boreelianus (F), Codex Seidelianus I (G), and Codex Seidelianus II (H).
Codex Seidelianus I seems slightly less Byzantine than the rest, and Codex Basilensis seems closer to the basic form of the Byzantine text.
Jacob Greelings includes to this family variants from Codex Vaticanus 354, Codex Mosquensis II, minuscules 44, 65, 98, 219, and 422. The Gothic Version made by Wulfila stays with close relationship to this Byzantine sub-family. Greelings classified in this group Codex Nanianus (U), but Frederik Wisse excluded U from this group while suggesting 271 should be added.
Greelings assigned manuscripts E, F, G, H as a core members of the group. Unfortunately all these manuscripts have survived in a fragmentary condition, it makes classification and restoration the text of the family more difficult.
According to Claremont Profile Method in the three test chapters of the Gospel of Luke, manuscripts E, F, G, H did not have sufficient consistency to demonstrate its existence as an independent textual group. Wisse included them to the textual family Kx. Family e (Soden's Ki) becomes Wisse's textual cluster Ω, an early form of Kx. Wisse confirmed statement of Soden that it is an early form of Kx. But Wisse used small sample size (three chapters of Luke), based on the age alone, it appears that Ki is independent of Kx. The text of the manuscripts could involved.