Rav Shlomo Heiman was a great Gaon in Lithuania who eventually emigrated to the US and became a Rosh Yeshiva at Torah Vodaas. After his passing, his widow wanted to move to Eretz Yisrael and get remarried. Rav Mordechai Ilan [author of the Mikdash Mordechai] thought that it might be a good shidduch for her to marry the recently widowed Chief Rabbi Unterman. The problem was that he was a Tziyoni and the Brisker Rov opposed him on many core issues. So he went to the Brisker Rov to ask his opinion on the shidduch.
As told in the sefer Harav Mi-Brisk:
ובכן הלך אותו ת"ח להמלך בדעתו של מרן זצ"ל האם כשר והגון הדבר להציע בפניה שידוך זה. והנה למרות התנגדותו העזה לדעותיו של אותו רב שחיבל בעמדותיו במערכות הדת בא"י, הרי שמרן זצ"ל השיבו על אתר "גם האבא מרן הגר"ח לא פסק מעולם שהמזרחי הם 'פסולי קהל', והשידוך הזה אכן הגון מאד עבור האלמנה".
And they got married!!
Kanaus - but with seichel!!
I might add that if the Brisker Rov felt that Rav Unterman wasn't frum enough, he wouldn't have approved of Rebbetzin Heiman marrying him. You see that someone could have "pasul hashkafos" [in the eyes of the Brisker Rov ztz"l] and still be a Yarei Shomayim. Of course, there is a difference between being a Tziyoni, and say, believing that the Torah is not Mi-shomayim [as is becoming popular - even in so called "Orthodox" circles]. If Rav Unterman would have been an apikorus ח"ו then it wouldn't have mattered how much Torah he would have known and he would have been beyond the pale.
I might add that if the Brisker Rov felt that Rav Unterman wasn't frum enough, he wouldn't have approved of Rebbetzin Heiman marrying him. You see that someone could have "pasul hashkafos" [in the eyes of the Brisker Rov ztz"l] and still be a Yarei Shomayim. Of course, there is a difference between being a Tziyoni, and say, believing that the Torah is not Mi-shomayim [as is becoming popular - even in so called "Orthodox" circles]. If Rav Unterman would have been an apikorus ח"ו then it wouldn't have mattered how much Torah he would have known and he would have been beyond the pale.