Jessel
From Memory Alpha, the free Star Trek reference
Jessel was Data's housekeeper in an unknown, alternate future timeframe, when he was a Lucasian Chair professor at Cambridge University.
Data noted that although she was "trying at times" (when she likened the new style of his hair to that of a "bloody skunk," for example), she made him laugh. (TNG: "All Good Things...")
Jessel was played by Pamela Kosh.
