Matching up a couple whose fathers have identical names

Q: Is it permissible for a groom and bride to marry when their fathers have the same name?
A: Certainly. This is mentioned in the Testament of Rabbi Yehudah Ha-Chasid (#23 and brought in Pitchei Teshuvah, Even Ha-Ezer 2:107 and Yoreh Deah 116:6). There is a dispute whether the Testament of Rabbi Yehudah Ha-Chasid only obligates his offspring or everyone. The Noda Bi-Yehudah (Second Edition, Even Ha-Ezer #79) wrote that this "prohibition" is not mentioned in the Gemara and it is not possible to add prohibitions which are not found in the Gemara. The Rebbe of Sanz did not agree and he said that everything in the Testament of Rabbi Yehudah Ha-Chasid applies to everyone (Shut Divrei Chaim, Even Ha-Ezer #8). Authorities give the advice that one of the fathers can add a name and there is then no issue. Maran Ha-Rav Kook wrote three responsum on this subject at the beginning of Shut Ezrat Cohain (#5-7). He says that being particular about this issue is only when someone suggests a match since it is possible to suggest many other people. If the couple meets on their own, however, this is different since it is not easy to meet someone to marry. Maran Ha-Rav Kook also said that this does not apply in Israel, since the merit of Eretz Yisrael protects one from such spiritual matters. He mentioned the Gemara in Berachot (44a) that there was one city in Eretz Yisrael called Gufnit and it had eighty pairs of brothers who were cohanim married to sisters, the daughters of cohanim. We see that they were not worried about "pairs" (a spiritual concern) since they were in Eretz Yisrael. In general, one who is not concerned about such matters is not affected by them. Furthermore, if a couple has an inclination and desire to marry, there is no concern. In sum: There is nothing to worry about, and if you add a name then there is no problem according to all opinions.