Pedro •arrow, barrow, farrow, harrow, Jarrow, marrow, narrow, sparrow, taro, tarot, Varro, yarrow •gabbro • Avogadro • Afro • aggro •macro • cilantro • Castro •wheelbarrow •Faro, Kilimanjaro, Pissarro, Pizarro, Tupamaro •Pedro • allegro • hedgerow • velcro •escrow •metro, retro •electro • Jethro •bolero, caballero, dinero, Faeroe, pharaoh, ranchero, sombrero, torero •scarecrow • Ebro •Montenegro, Negro •repro • in vitro • Pyrrho • synchro •windrow • impro • intro • bistro •Babygro • McEnroe •biro, Cairo, giro, gyro, tyro •fibro • micro • maestro •borrow, Corot, morrow, sorrow, tomorrow •cockcrow • cointreau •Moro, Sapporo, Thoreau •Mindoro • Yamoussoukro •Woodrow •burro, burrow, furrow •upthrow •De Niro, hero, Nero, Pierrot, Pinero, Rio de Janeiro, sub-zero, zero •bureau, chiaroscuro, Douro, enduro, euro, Ishiguro, Oruro, Truro •Politburo • guacharo • Diderot •vigoro • Prospero • Cicero • in utero •Devereux • Jivaro • overthrow

Pedro: For Spanish and Portuguese rulers thus named, use Peter.