Samuel Sebastian Wesley (14 August 1810 – 19 April 1876) was an English organist and composer. Born in London, he was the eldest child in the composer Samuel Wesley's second family, which he formed with Sarah Suter having separated from his wife Charlotte. Samuel Sebastian was the grandson of Charles Wesley. His middle name derived from his father's lifelong admiration for the music of Bach.
When our Savior was discoursing at the Last Supper with his beloved disciples and foretold that one of them should betray him, each of them immediately applied it to his own heart and said, “Lord, is it I?” And would persons in like manner, when preachers are dissuading from any sin or persuading to any duty, instead of crying, “This was designed against such-and-such a one,” turn their thoughts inwardly, and say, “Lord, is it I?” George Whitefield