Mastholte/Rietberg- Sonntag

Learned advice needed:

1) I have traced my SONNTAG line from Mastholte/Moese to
the late 1700s. The Katholische Kirche Mastholte Kirchenbuch
microfilm from FHC starts in 1681. Would the Katholische Kirche
Rietberg microfilm, which starts in 1655, be the predecessor to the
Mastholte microfilm,or also cover parts of the Mastholte region?

2) The Katholische Kirche Mastholte Kirchenbuch death register
microfilm does not go beyond 1874. Where would I search to find
death dates after this time?

Thank you,

Jan
Shingle Springs, CA

1 Joannes Theodorus SONNTAG 1760 - 1777
.. +Anna Maria KAIPING 1760 -
......... 2 Anna Catharine SONNTAG/KAIPING 1776 - 1851
............. +Peter K�LAGE 1779 - 1853
.................... 3 Maria Christina SONNTAG 1811 -
.................... 3 Theresa SONNTAG 1814 - 1831
.................... 3 Herman Peter SONNTAG 1816 - 1833
.................... 3 Johan Henry Gerhard SONNTAG 1819 -
........................ +Maria Catherine Margaretha
K�HMANN 1823 - 1867
............................... 4 Anna Catharine Gertrude
SONNTAG 1845 -
................................... +Joseph B�CKER 1845 -
............................... 4 Peter Stephan SONNTAG 1848 -
................................... +Gertrude Margaretha
HANEBRINK 1859 - 1914
............................... 4 Casper SONNTAG 1851 -
............................... 4 Christina Gertrude SONNTAG
  1854 -
............................... 4 Gertrude Christina SONNTAG
  1857 -
............................... 4 Franz Heinrich SONNTAG 1860 -
............................... 4 Joseph SONNTAG 1863 - 1910 d.
St. Louis, MO
................................... +Katherine PICKER 1865 - 1936 b.
& d. St. Louis, MO
............................... 4 Unnamed SONNTAG 1867 -
1867
.................... *2nd Wife of Johan Henry Gerhard
SONNTAG:
........................ +Catherine Margaretha KRAFT 1807 -