Two Westchester Teens Make Crain's New York Business 20 Under 20 List

The inaugural list highlights teens who are already making their mark on the business world.

In case you weren’t already feeling old and unaccomplished enough, Crain’s New York Business just released its first ever “20 Under 20” list, profiling 20 New York area kids who are already showing remarkable promise in business.

Two Westchester residents are among the list: 18-year-old Harrison resident Mary Grace Henry—who we already knew about; we picked her as one of 914INC’s Wunderkinds in 2013— and Jason Marmon, also 18, of Armonk.

Henry, a college freshman at Notre Dame, is founder of Reverse the Course Foundation, an international nonprofit which sells headbands to fund school tuition for girls in Africa. She founded the organization in Harrison in 2008 to take to another level her high school’s (Convent of the Sacred Heart in Greenwich, Connecticut) fundraising efforts for its sister school in Uganda. According to Crain’s, her foundation has bestowed 164 years’ worth of tuition to 79 girls in Africa, donating $45,000 in 2013 alone.

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The experience which landed Jason Marmon on the Crain’s list is less philanthropic than Henry’s, but no less impressive. He is co-founder and CTO of the real estate app HomeSwipe, which is billed as “the Tinder of apartment hunting,” has been downloaded more than 100,000 times, and has received $500,000 in venture capital funding. Marmon helped build the app and now works full-time at the company’s New York City office. He told Crain’s, “In the end, if this doesn’t work out, I’ll have material for a great college essay.”

Read the full story here.

And check out our 2015 914INC. under-30 Wunderkinds here. If you know of Westchester residents 30 and under who are doing incredible things in business, the arts, nonprofits, government, etc., please let us know; we will consider them for our 2016 Wunderkinds story. Email:

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