I may be looking at it in a different light (and from a longer perspective) than some. I think the offspring should be considered, but the IMPACT on the breed (as a whole) should also be factored in. My nominee is Eng Sh Ch. Sandylands Longley Come Rain.
She produced 5 litters from 4 sires:

5/1/77 Sandylands Mark
     Eng Ch. Sandylands Master Piece Of Breckondale (South Africa)
     Ch. Sandylands Morningcloud (USA)
          Ch. Farmer M. Brown Of Ayr (USA)
     Eng Sh Ch. Sandylands My Rainbeau (UK)
          Multi Ch. Sandylands Rip Van Winkle (USA, France)
          Eng. Ch. Ransom Of Sandylands (UK)
     Aust Ch. Sandylands Mastermind (Australia)

4/24/80 Sandylands Newinn Columbus
     VV86 SCH DKCH INTCH VDHCH Sandylands Night Flight
          DKCH INTCH DCH VDHCH Dee-Fair Flying Marigold Melic
          DKCH INTCH DCH VDHCH Selmaflight
          DCH VDHCH INTCH VV90 Dee-Fair Amazing Fame
     Eng Ch. Sandylands Nimbus

4/1/81 Ardmargha Mad Hatter
     Sandylands April Madness
          Israeli CH Caccia Stromboli
          N ShCh Surprising's Susanna
     Sandylands April Fool
          Bradking Jason
               SP Ch,LUX CH Blondella Box Clever
               GB SH CH. Bradking Hugo
               AUST CH. Be My Guest at Ardmargha
          Sandylands Forever Amber at Tibblestone
               Eng Ch. Tibblestone The Chorister

3/24/82 Squire of Ballyduff
     Heatherbourne Bramble
     Eng Sh Ch. Sandylands Bella
          Int/Slo Ch. Sandylands Bequest
          Sandylands Catch Penny
               Norw SHCH, Swe SHCH, INTSHCH Caccia Tarantella
               Israeli CH Caccia Stromboli

9/1/83 Squire of Ballyduff
     Sandylands Bramble
          Eng Ch. Sandylands My Guy
          Eng Ch. Sandylands Royal Escort

I listed some of the "lesser known" (in this country) champions and producers from diverse parts of the world to emphasize how far reaching her influence has been on the Labradors of today.

Is it just me or are these posts like watching train wreak

Hmm... I guess it is just you. Be careful what you WREAK.

Awww Maureen..leave it to you. I really didn't mean any disrespect to you, but I guess that's what I get for trying to watch TV and type at the same time

100% agree with you Maureen, that is a producer.

Are those the whelping dates or dates the studs themselves were whelped that you have listed Maureen? They don't coincide with either.

I am truly confused. So, can you explain your list and dates please?

I believe the dates listed are the dates the litter was born next to the name of the Sire of the litter...am I correct Maureen?

Those are the best whelp dates I could find for the offspring listed under the sire. There were 5 litters, the years are correct, but the month and day were not given or accurate for some of the offspring.

Well Maureen, we do Agree on somethings My foundation bitch Adramrgha Lucy Locket JW was by Eng/Aust Ch.Sandylands My Lad...Mark and Longley Come Rain."Lucy" is still in my main bitch line today! Ch.Brooklands Hampshire Bucky was by Ch.Sandylands Royal Escort..Judy Davis has bulit a whole winning kennel on these lines www.Decoylabs.com. You might enjoy her pedigrees to see how VERY TIGHT we have been breeding these lines and they still"COME OUT CLEAN!" Was Can/Am. Ch.Sandylands Royal Envoy, "Royal Escorts" litter brother?

Thank you Maureen...I've loaned out all my "Julie Browns" and "Harold Claytons" old brain couldn't remember

I was NOT planning on getting involved in this - but I have no choice.

Maureen, you truly nailed it on this one. Hat's off.... Lucy is/was a testament to how insightful Gwen Broadley was, and why she is and will continue to be such a legendary figure in our breed. Thanks for posting this.

In my book Sandylands My Guy was sired by Kupros Master Mariner ex Sandylands Bramble, who was out of Longley Come Rain and Squire of Ballyduff.

Anki, that's what Maureen has too, but she doesn't have Kupros Master Mariner listed. It's the last litter. Also, Am/Can Ch Sandylands Marshall was My Guy's littermate.

Fascinating topic! I had to go look for an image of Sandylands Longley Come Rain, to satisfy my curiosity, and found this page. Sandylands Longley Come Rain is most of the way down the page, but the history on Gwen Broadley is an excellent read too.

http://www.sandylands.net/history2.html

We could go even farther back and mention Olivia of Blaircourt, dam of Ruler of Blaircourt and Sam of Blaircourt and granddam of Sandylands Tweed of Blaircourt. I challenge you to find a conformation pedigree that doesn't have Olivia in it many times over. For instance, Sandylands Longley Come Rain has Olivia in her pedigree 11 times. Also there was the dam of Mark and Midas, Sandylands Truth- and Olivia's granddaughter Sandylands Shadow. If we are considering the influence they had on the breed many generations down, these were way up there. They are in my pedigrees dozens, maybe even hundreds, of times. So is Diant Juliet.
A case could be made for Ballyduff Marina, who was granddam of Jayncourrt Ajoco Justice, who is in my pedigrees numerous time, and Ballyduff Lark, so important to American kennels like Valleywood, Tabatha, Beechcroft, Windfall. Marina is also behind many of the Kupros dogs like Master Mariner and Marshall.