The Only Use of

William the Conqueror
in
The Adventures of Huckleberry Finn

We didn't cook none of the pies in the wash-pan—afraid the solder would melt; but Uncle Silas he had a noble brass warming-pan which he thought considerable of, because it belonged to one of his ancesters with a long wooden handle that come over from England with William the Conqueror in the Mayflower or one of them early ships and was hid away up garret with a lot of other old pots and things that was valuable, not on account of being any account, because they warn't, but on account of them being relicts, you know, and we snaked her out, private, and took her down there, but she failed on the first pies, because we didn't know how, but she come up smiling on the last one.†
Chpt 37

Definition:

first Norman to be King of England after winning the battle of Hastings in 1066 (1027-1087)