In 1941, Madame Wellington Koo moved to New York City, where her sons Wellington Koo Jr. and Freeman Koo were educated at their father's alma mater, Columbia University.
Pada 1941, Madame Wellington Koo pindah ke New York City, dimana putra-putranya Wellington Koo Jr. dan Freeman Koo dididik di alma mater ayahnya, Columbia University.