Hare-Willing family.

Robert Hare, an English immigrant in 1773, was a prominent businessman and served in the Pennsylvania legislature and as a trustee of the University of Pennsylvania. He married Margaret Willing, sister of Thomas Willing, who was a banker and official and legislator in Pennsylvania. Their son, Robert, was a chemist and inventor and taught at the University of Pennsylvania. In the third generation, John Innes Clark Hare was a distinguished Philadelphia judge. His son, Dr. Horace Binney Hare was an instructor of Chemistry and professor of Hygiene. Married to Emily Power Beale in 1868, they had five children, Robert Hare, Charles Willing Hare, Esther Binney Hare, Horace Binney Hare, married to Ellen Mary Cassatt, and Thomas Truxtun Hare, a track and field Olympic medal winner in 1900, 1904.