We have not yet mentioned Gregory's friendship with Archibald Pitcairne. Details of when the two first met are not known but they may have met while Gregory was on the Continent.
Kami ay hindi pa nabanggit Gregory's friendship sa Archibald Pitcairne. Mga detalye ng kapag ang dalawang unang matugunan ang mga hindi kilala ngunit maaaring sila ay nakikita habang Gregory ay sa Kontinente.