Russian Admirals Siniavin or Senyavin?

Does anybody know if the Russian Admiral Siniavin who was profiled in Vol 19 of The Naval Chronicle (January to June 1808) is Admiral Dmitry Senyavin, commander of the Russian fleet at Lisbon?

Here is the chronicle's profile:

"This officer is of one of the first families in Russia. About the year 1783, being then a youth, he was sent to England by the Russian court, who obtained permission from the British government for his being admitted a volunteer in our navy. He was accordingly, by order of the Lords of the Admiralty, received on board the Leander, of 50 guns, then destined for the Halifax station, in America, where he served about three years. He was Afterwards employed for nearly the same time in the Mediterranean, as a volunteer midshipman, on board the Pearl frigate, then commanded by the late Honourable Seymour Finch, brother to the Earl of Aylesford, which ship he quitted at Smyrna, in 1789, in order to render to his own country the benefit of that knowledge and experience he had acquired from us, Russia being then engaged in a war with the Turks, against whom he seemed, by nature to be a zealous adversary. During the last war he served, and held the rank of a post captain in the Russian navy, and was out of their fleet that wintered in the Medway; but on that fleet being ordered home, and the Emperor Paul entering into the views of of Bonaparte, he retired, and continued in retirement until Russia again made common cause with this country."

This seems at odds with Wikipedia's, seemingly well sourced, entry for Dmitry Senyavin. https://en.wikipedia.org/wiki/Dmitry_Senyavin

I suppose it could be a relative as Senyavin came from a naval family.