it is my understanding that the Cosby Show debuted in 1984.
It ran for 8 seasons.
The Cosby Show - 1984 Is That My Boy 1-4 was released on: USA: 11 October 1984
The Bill Cosby Show - 1969 Rules Is Rules 1-5 was released on: USA: 12 October 1969
The Bill Cosby Show - 1969 A Word from Our Sponsor 1-12 was released on: USA: 7 December 1969
There was never an episode that showed a wedding. Season 4, episode 1 "Call of the Wild" opens showing the couple returning from their honeymoon.
It ran for 8 seasons.
The Cosby Show - 1984 Is That My Boy 1-4 was released on: USA: 11 October 1984
The Cosby Show - 1984 How Ugly Is He 1-9 was released on: USA: 15 November 1984
The Bill Cosby Show - 1969 Rules Is Rules 1-5 was released on: USA: 12 October 1969
The Cosby Show - 1984 Pilot 1-1 was released on: USA: 20 September 1984 Spain: 3 February 1986
No, it ended after the first season. There were several petitions to save it, but the show ended after season 1. However, ABC did air the two episodes they skipped.
The Bill Cosby Show - 1969 The Gumball Incident 1-19 was released on: USA: 1 February 1970
The Cosby Show - 1984 A Shirt Story 1-5 was released on: USA: 18 October 1984
The Bill Cosby Show - 1969 The Substitute 1-9 was released on: USA: 16 November 1969
The Cosby Show - 1984 Father's Day 1-13 was released on: USA: 20 December 1984
The Cosby Show - 1984 You're Not a Mother Night 1-11 was released on: USA: 6 December 1984
The Bill Cosby Show - 1969 Lover's Quarrel 1-17 was released on: USA: 18 January 1970