Meanwhile some suspicion that the case was aimed at the newly acquired privileges of the Marranos seems to have got abroad. Many of the Jews in London were of Spanish birth, and others, though natives of Portugal, were probably endenizened Spaniards, since in their guise of _Nuevos Cristianos_ they had held high office under the King of Spain.[140] It was clear, then, that if the case against Robles was established other prosecutions would follow, and in that way the small Jewish community would be broken up. The danger was all the greater since the protection and privileges so recently acquired by the Jews had only been granted verbally, and might easily be repudiated if public opinion proved too strong for the Protector. There was, however, no immediate reason why the leading Marranos, who had hitherto been in negotiation with Cromwell, should take up Robles’s cudgels, for he belonged to a party in the Synagogue which had imbibed strong Royalist sympathies in Holland and France, and which, consequently, had kept itself aloof from Menasseh’s Readmission campaign. They accordingly confined themselves to the presentation of a petition to the Protector, in which they asked that the “favours and protection” accorded to them, including the right of worship, might be confirmed in writing. At the same time they prayed for a license to acquire ground for a Jewish cemetery. This document was signed by Menasseh ben Israel, Antonio Fernandez Carvajal, and five other Marranos, but Robles was not among its signatories.[141] Cromwell at once referred this petition to the Council, but the Lord President, apparently recognising that the Jewish question was coming up in a new form, held it back until the Robles case had been dealt with.[142] The fact that Robles was a Jew had, indeed, already been ascertained, and the belief that the prosecution was aimed at all his co-religionists was gaining ground owing to a new outburst of activity on the part of the anti-Semites. The anxiety of the Marranos at the shelving of their petition became accentuated by this agitation, and especially by the doubts which it seemed to be producing in the minds of some of their best friends. The wavering feeling in high places was made disagreeably manifest to them by a letter addressed to Menasseh ben Israel by John Sadler, in which that friend of the Jews pointed out that the charges of ritual murder and _quasi_ idolatry preferred by Prynne and Ross were being widely discussed, and that a public answer to them was urgently necessary.[143] Before Menasseh’s reply was written Colonel Jones presented an interim report to the Council, from which it appeared _inter alia_ that Knevett had filed a further information denouncing other Marranos as Spanish subjects.[144]