Q. We find among the Rishonim the expression “Ben HaKadosh” in reference to someone who is a son of someone who was killed ‘Al Kiddush HaShem’. I have attached a PDF file that contains some sources to that effect
Question: Although it is written in Sefer Chassidim that one should not refer to oneself in this manner, and the MaHarshal says that we do not write thus in a Get; when calling someone to the Torah, do we indeed, or do we not, call him ‘Ploni ben HaKadosh Ploni’?

A. Horav S. Z. Auerbach zt”l (in his Hagada shel Pesach p.402, Bishviley Hakedusha p. 19) writes that in principle even Moshe Rabbenu would be summoned to the Torah as Moshe Ben Amram, without any titles. He explains that the fact that we call someone with the title rav or horav when given an aliya, is only to ascertain that he is not G-d forbid a Tzduky, rather he belongs to the Kat of the Rabbanim. (See also Leket Yosher O.H. 30)
However other Poskim mention different titles to be added to one given an aliya, such as when the Gabay calls his own father to the Torah and adds the title Avi Mori (Aruch Hashulchan Y.D. 242: 15, Ben Ish Chai, Pischei Teshuvo ibid.) or Chover, for someone who has memorized a large amount of the Talmud (Halichos Chaim p.144)

See also Bais Ovi (5: 56) on different traditions when summoning a Rosh Yeshiva or Chassidic Rebbe to the Torah.

Horav Shlomo Miller’s Shlit’a opinion is that indeed if there is such an established tradition already you follow it, however, you don’t add titles that are nor regularly used in that particular kehila

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a