The phrase "acknowledged himself to" is not correct in standard written English.
It can be used when someone is admitting or recognizing something about themselves, but the construction is awkward and not commonly used.
Example: "He acknowledged himself to be the cause of the problem during the meeting."
Alternatives: "admitted to being" or "recognized himself as".
In return, the king of England acknowledged himself to be Louis's vassal.
He readily acknowledged himself to be a disciple of the historian Barthold Georg Niebuhr, who introduced rigorous criticism of sources into historiography, however much their methods of research and presentation differed and despite the fact that he went considerably beyond his great predecessor in demythologizing Roman history.
The policies of the two emirs were quite divergent: Muḥammad ibn Hūd (1228 38) emphasized resistance on the part of the Muslims against the Christians who, led by Ferdinand III, were occupying the Guadalquivir valley; by contrast, Muḥammad I ibn al-Aḥmar (ruled in Granada 1238 73) acknowledged himself to be a vassal of the king of Castile and even helped him against his own Muslim coreligionists.
Hoping to wreck Marshall's candidacy, a man named Jordan Harris charged that Marshall had, in a letter to John Crittenden, Sr., acknowledged himself to be a liar.
Indeed, at its close in 1965, three years after the long-awaited publication of his first novel The Collector and on the eve of international fame, Fowles acknowledges himself to be a man divided, writing a 'schizophrenic' dialogue with himself.
Vice President Al Gore, acknowledging himself to be an "imperfect messenger" on the subject of campaign finance, plans to propose a major change in federal campaign financing on Monday and will pledge to make the overhaul of the system his top domestic legislative priority.
By breaking the code, the man acknowledged himself as a witness to what, despite the pretense, had been a very public outburst.
In the story, a devil is hiding within a pagan idol, and bound by Bartholomew's spiritual powers to acknowledge himself and confess, the devil refers to Jesus as the one which "made war on Hel our queen" (Old Norse heriaði a Hel drottning vara).
And he began to win: he was able in 2014 to acknowledge himself as the recipient of the NSL, and in December of that year exercised an annual option to challenge residual secrecy.
Manuel had his revenge in 1159 when Reginald was obliged to acknowledge himself as his vassal.
And whereas Mr Luzhkov still refuses to acknowledge himself as a presidential candidate, he ranks among the top two or three by anybody else's reckoning.
