I wish to write the name of pdfTeX's author:
I am not able to figure out how to write the middle name. I triedTh\'{\^{e}}, but it doesn't return the desired output.
It's different from the similar double accent question: Multiple diacritics on one character since the answer there (using TIPA) doesn't work here. This is a very specific situation.



H\`an Th\raise .5ex \rlap{\char19}\^e Th\`anh? – Henri Menke Jul 22 '16 at 08:16H\`an Th\'{\^e} Th\`anhand typeset with XeLaTeX. – Henri Menke Jul 22 '16 at 08:21