The hospitality of Stewartson and his wife was legendary, and his happy, generous personality, coupled with his staunch support of those conducting good research and teaching, made him one of the most widely loved and revered of mathematicians.
Ang mabuting pakikitungo ng mga Stewartson at kanyang asawa ay maalamat, at ang kanyang mga masaya, mabait pagkatao, kaisa sa kanyang pigilin ang pagdaloy ng dugo ng suporta ng mga pagsasagawa ng mabuting pananaliksik at pagtuturo, na ginawa sa kanya ng isa sa mga pinaka-malawak ang pag-ibig at revered ng mathematicians.