Complex sentence: Some mainmstream writers have taken the vuiew that Derby may have had links to Shakesperare, particularly that the occasion of Derby's wedding was the inspiration for "A Midsummer Night's Dream", and that the play was first performed at the couple's wedding festivities.
Split into simpler sentences: Some mainmstream writers have taken the view that Derby may have had links to Shakesperare. In particular it has been argued that that the occasion of Derby's wedding was the inspiration for "A Midsummer Night's Dream", and that the play was first performed at the couple's wedding festivities.