Lady Holland in her day-bed, 1843-5. As a young man, Watts spent a number of years in Florence (1843-7) as a guest of Lord Holland, the British Minister to the Court of Tuscany*, and his wife Augusta. He was plainly rather smitten by her.
*I had to look this up, Tuscany was apparently a Grand Duchy at the time, with its capital in Florence; what an appealing, I could fancy being Minister to its court if they ever re-establish the Grand Duchy (e.g. when Italy gets ejected from the Euro and the EU begins to disintegrate - perhaps we could have a court too here in Wessex in that case).
A pencil drawing of Lady Holland from the same period, which he apparently gave to her a gift, since it was preserved in a frame marked with her initials.
A detail from an oil-portrait of her, which has less individuality.
A portrait of the great Victorian photographer Julia Margaret Cameron.
Mrs Percy Wyndham, c. 1870; I've included this one for the striking dress with the sunflowers on it.
Sargent's portrait of Mrs Wyndhams three daughters, who are more conventionally upholstered: