Complex sentence: It had its own eponymous parliamentary constituency for 98 years from 1885 to 1983, following this it was in Gainsborough and Horncastle and since 1997, Louth and Horncastle.
Split into simpler sentences: It had its eponymous parliamentary constituency for 98 years from 1885 to 1983. It was then Gainsborough and Horncastle and since 1997, Louth and Horncastle.