One of these churches was dedicated to S. Andrew the Apostle, and stood 'near the column,' [Greek: plêsion tou stylou];[153] the other to S. Andrew, not otherwise identified, was near the Gate of Saturninus, [Greek: plêsion tês portas tou Satourninou].[154] It is difficult to decide which church is represented by the mosque. For there were two columns on the Seventh Hill of the city: the Column of Constantine the Great, which stood outside the city bounds, giving name to the extra-mural district of the Exokionion now Alti Mermer; and the Column of Arcadius now Avret Tash. Nor can the position of the Gate of Saturninus be determined more accurately than that it was an entrance in the portion of the Constantinian Walls which traversed the Seventh Hill, the Xerolophos of Byzantine days. On the whole, however, the indications favour the view that Hoja Mustapha Pasha Mesjedi represents the church of S. Andrew near the Gate of Saturninus. A church in that position, though outside the Constantinian fortification, was still so near them that it could be, very appropriately, described as near one of the city gates. Again the Russian pilgrims[155] who visited the shrines of Constantinople in the second quarter of the fifteenth century found two churches dedicated to S. Andrew in this part of the city, one to S. Andrew the Strategos, the other to S. Andrew 'mad with the love of God' ('God-intoxicated'). In proceeding northwards from the church of S. Diomed, which stood near the Golden Gate (Yedi Koulé), the Russian visitor reached first the sanctuary dedicated to S. Andrew the Strategos, and then the church dedicated to S. Andrew the 'God-intoxicated,' which lay still farther to the north. But this order in the positions of the two churches implies that Hoja Mustapha Pasha Mesjedi represents the church of S. Andrew the Strategos, a martyr of the fourth century, viz. the church which the documents of the sixth century describe as near the Gate of Saturninus, without specifying by what title its patron saint was distinguished. This agrees, moreover, with what is known regarding the site of the church of S. Andrew the Apostle. It stood to the west of the cistern of Mokius,[156] the large ruined Byzantine reservoir, now Tchoukour Bostan, to the north of Hoja Mustapha Pasha Mesjedi.