Howie23
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No. In general, a caster's spells don't end merely because the caster has died.
However, if the summoned creature dies or the spell ends, any spells that have been cast by the summoned creature ends.
Say Wizbang summons Arty Archon and has him cast aid on Freddy Fighter. 2 rounds later, Wizbang dies. Arty's still there. 3 rounds later, Arty dies. The aid spell cast on Freddy now ends.