A while back, GNRHead (William) had provided some comments to a rebuttal the present author had provided. GNRHead disputed the idea that Tertullian was the first early church father of record to identify Peter as "the rock" in Matthew 16. At that time he referred us to his videos. The present author can report that he has now watched every YouTube video that GNRHead has produced. GNRHead lists six church fathers that alleged identify Peter with Matthew 16's rock.
Without getting into whether these fathers were misquoted, we can dismiss GNRHead's claim on the following basis:
1) Ephraim of Syria lived ca. 306-373;
2) Hillary of Poitier lived ca. 315-367;
3) Cyril of Jerusalem lived ca. 315-387;
4) Gregory of Nazianzus lived ca. 330-390;
5) Jerome lived ca. 347-420; and
6) Augustine of Hippo lived ca. 354-430.
In contrast, Tertullian lived ca. 155-230.
So, no, the alleged testimony of those six men in no way substantiates the claim that "all the church fathers believed Peter was the Rock." The claim remains unproven, as GNRHead remains unable to demonstrate even a single (much less "all") church father who lived before the middle of the third century who believed that Peter was Matt. 16's "Rock" upon which the church was built.