He believed he was an indulgent father (as indeed he was), and I might spare myself any solicitude on her account.
Charles Dickens. David Copperfield (1850)
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He, so manly a man, never opposed her, had indeed, with her, no will of his own, and was anxious, it seemed, for nothing but to anticipate her wishes. And she could not but appreciate this, even though the very intensity of his solicitude for her, the atmosphere of care with which he surrounded her, sometimes weighed upon her.
Leo Tolstoy. Anna Karenina (Translated by Constance Garnett)
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and Elizabeth began to like them herself, when she saw how much affection and solicitude they showed for Jane.
Jane Austen. Pride and Prejudice (1813)
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"So that's the reason for your womanly solicitude! [...]"
Agatha Christie. And Then There Were None. p.180 (1939)