Frederick Wollaston Ramsden and Hildebrand Ramsden were two of five brothers. They had a multitude of interests including biology, botany, stamps and coins. Hildebrand was a solicitor who was a member of the Royal Etemological Society. I had found an advertisement about the auction of his library after his death in 1899. I have not found a connection to Jesse Ramsden and I have traced the family to the late 1600's in Yorkshire. But since most Ramsdens originated in Yorkshire and I have not followed the older sibling lines,there is always the possibility of a connection.
Frederick was named for a great uncle on his father's side, Edward Wollaston (1753-1838), a cleric at the Charterhouse in London and rector of Holy Trinity Church in Balsham, Cambridge. I am not familiar with William Hyde Wollaston and he died too early for there to be any personal connection with Hildebrand but the Wollastons were a fairly large and notable family and it is entirely possible that they might be related.
Hope this gives you some information to satisfy your curiosity.