Wealthy businessmen of the Gilded Age who followed in the footsteps of Andrew Carnegie in donating their wealth included Leland Stanford and William Gladden.
Charles Darwin and William Gladden.
John D. Rockefeller and Charles Darwin.
John D. Rockefeller and Leland Stanford.

John D. Rockefeller and Leland Stanford.

Explanation:

John D. Rockefeller who was one of the wealthiest men of his time, was inspired by Andrew Carnegie's philantrophic ventures so much so that he gave away over $500 million to various causes such as education and scientific ventures. Bear in mind that this figure is unadjusted for inflation which means in today's dollars he gave away tens of billions.

Leland Stanford who founded Stanford University along with his wife, donated most of his wealth as well in honor of his son who passed away.

about 3,040,000 results (1.57 seconds)

explanation:

"o" (and any subsequent words) was ignored because we limit queries to 32 words.