Evelyn's Diary. 26 Nov 1683. I went to compliment the [his mother] Duchess of Grafton (age 15), now lying-in of her first child, a son, which she called for, that I might see it. She was become more beautiful, if it were possible, than before, and full of virtue and sweetness. She discoursed with me of many particulars, with great prudence and gravity beyond her years.

In 1719 Charles Fitzroy 2nd Duke Grafton (age 35) was one of the main supporters of the Royal Academy of Music.

In 1739 Charles Fitzroy 2nd Duke Grafton (age 55) supported the creation of the Foundling Hospital. He sat on that charity's original Court of Governors with such fellow Governors as John Russell, 4th Duke of Bedford (age 28), Vere Beauclerk, 1st Baron Vere (age 39), and Micajah Perry, a Lord Mayor of London.

Around 1740. William Hoare (age 33). Portrait of Charles Fitzroy 2nd Duke Grafton (age 56).

On 29 Jun 1743 Horace Walpole 4th Earl Orford (age 25) wrote to Horace Mann 1st Baronet (age 36):

[Charles Fitzroy 2nd Duke Grafton (age 59)] ... is so unhappy in his heir apparent (age 25), that he checks his hand in almost everything he undertakes. Last week he heard a new exploit of his barbarity. A tenant of [his son] Lord Euston (age 27) in Northamptonshire brought him his rent, and the Lord said it wanted three and sixpence: the tenant begged he would examine the account, that it would prove exact - however, to content him, he would willingly pay him the three and sixpence. Lord E (age 27). flew into a rage and vowed he would write to the Duke (age 59) to have him turned out of a little place he has in the post office of thirty pounds a year. The poor man, who has six children, and knew nothing of my Lord's being on no terms of power with his father (age 59), went home and shot himself.

In Aug 1743 Horace Walpole 4th Earl Orford (age 25) wrote to Horace Mann 1st Baronet (age 36):

[[his son] George Fitzroy Earl Euston (age 27)] ... forced himself to the Duke of Grafton's (age 59) house ... threw himself at his feet, professed great remorse for his past conduct, and promised an entire reformation for the time to come. But the Duke (age 59) told him he had tried him too often to be deceived any more and that God was his witness that no man ever loved his son more tenderly, and seen him lost with greater pain, but that was over now; that he attempted in vain to move the bowels of a father who had long since looked upon himself to have no son.