My children recently bought a new house with many plants. 2 of the trees I could not identify. I have attached thumbnail photos.
Thanks! Yep, certainly a Catalpa. Whether Northern C. speciosa or Southern C. bignonioides (or even one of the Asian species), not easy to tell at this time of year, it'll be easier when it is in flower. Measuring the old seed pods should also help: Stout, over 1cm diameter: C. speciosa. Slender, under 1cm diameter: C. bignonioides.