Here, James Dowland's son (played by Oscar Lloyd) is listed in the credits as Sidney. However when he becomes a regular character in Series 3 and 4 (now played by Edward Darnell-Hayes), his name is spelled Sydney in the credits.
When Robert sits to read a poem to Miss Margaret, the CC say it's Thomas.
The poem Robert Timmons reads to Miss Margaret is William Shakespeare's Sonnet 116 written circa 1590.